Category: Musculoskeletal

Pes cavus, commonly called a high-arched or “claw” foot, is a structured deformity in which the longitudinal arch of the foot is abnormally elevated, producing a relatively stiff foot with increased pressure under the heel and forefoot. Although it can be an isolated, idiopathic variant, pes cavus is often a clinical sign of underlying neuromuscular disease, and its management must therefore address both the foot morphology and the causative pathology.

Definition and Classification

Pes cavus is defined as an exaggerated elevation of the medial longitudinal arch, visible in the sagittal plane, and is often accompanied by associated deformities such as hindfoot varus, forefoot adduction, and plantar flexion of the first ray. The terms “pes cavus” and “pes cavovarus” are frequently used interchangeably, though cavovarus implies a triplane deformity with varus of the hindfoot and adduction of the forefoot superimposed on the cavus component.

Three main subtypes are commonly described: anterior cavus, posterior cavus, and mixed cavus. Anterior cavus is associated with a plantar-flexed first ray and forefoot pronation, while posterior cavus is dominated by a calcaneal pitch increase and hindfoot varus; mixed cavus combines features of both. In clinical practice, the distinction is important because it guides both biomechanical assessment and surgical planning.

Epidemiology and Aetiology

In adults, the prevalence of pes cavus is estimated at approximately 10–29%, with no clear gender predominance. Many cases are idiopathic or familial, but a significant proportion are acquired and linked to neurological or musculoskeletal conditions.

Neurological aetiologies include:

• Hereditary motor and sensory neuropathies, particularly Charcot–Marie–Tooth disease
• Spinal cord disorders such as spinal dysraphism, tumors, or trauma
• Upper motor neuron conditions like cerebral palsy or stroke
• Peripheral nerve lesions, for example from compartment syndrome or trauma

Non-neurological causes include congenital deformities (e.g., clubfoot residual deformity), trauma with malunion, inflammatory conditions, and muscle imbalances secondary to local pathology. Importantly, the presence of a rigid, progressively worsening cavus foot in a child or young adult should prompt investigation for an underlying neuromuscular disorder.

Clinical Features and Symptoms

Patients with pes cavus typically present with:

• Pain localized to the heel, lateral forefoot, and sometimes the arch, due to focal overload
• Recurrent ankle sprains and a sense of instability, as the high arch reduces the contact area and compromises shock absorption
• Clawing or hammertoes, caused by imbalance between intrinsic and extrinsic muscles of the foot
• Difficulty with footwear, as the high arch and rigid foot shape can create pressure points and poor fit.

Gait abnormalities may include a shortened stance phase, increased lateral loading, and a tendency to “stiff-knee” gait in more severe neuromuscular cases. In children, parents may note that the child walks on the outer border of the foot or has frequent “falling over” of the ankle.

Assessment and Diagnosis

A comprehensive assessment begins with a detailed history, including family history of neuropathy, developmental milestones, and progression of the deformity. Neurological examination should evaluate distal muscle strength, tone, reflexes, and sensory function, as subtle signs of neuropathy may be present even when the foot deformity is the most obvious feature

Physical examination focuses on:

• Arch height and flexibility: a rigid cavus suggests a more established or neuromuscular cause
• Hindfoot position: varus is common and may be fixed or reducible
• Forefoot alignment: adduction and pronation are frequent
• Toe posture: claw toes indicate intrinsic weakness or imbalance
• Muscle bulk and tendon tightness, particularly the Achilles and plantar fascia.[acnr.co]

Radiographic evaluation includes weight-bearing foot X-rays to measure calcaneal pitch, first-ray angle, and other indices of arch elevation and hindfoot/forefoot alignment. In suspected neuromuscular cases, further investigations such as electromyography (EMG), nerve conduction studies, or genetic testing may be warranted to identify the underlying condition

Management Principles

Management of pes cavus is guided by the severity of the deformity, the presence of symptoms, the flexibility of the foot, and the underlying aetiology. The overarching goals are to reduce pain, improve function and stability, prevent progression, and, where possible, address the causative condition.

Conservative Management

Conservative measures are the first line of treatment for mild to moderate, flexible deformities:

• Orthotic devices: Custom foot orthoses with appropriate arch support, heel cupping, and forefoot relief can redistribute pressure, improve stability, and reduce pain. In neuromuscular cases, orthoses may also need to accommodate claw toes or varus alignment.[
• Footwear modification: Shoes with a supportive midsole, adequate cushioning, and a wide toe box help accommodate the high arch and clawed toes while reducing lateral overload.
• Physical therapy: Targeted stretching of the Achilles tendon and plantar fascia, alongside strengthening of intrinsic foot muscles and hip stabilizers, can improve flexibility and dynamic control. Gait retraining may be beneficial in cases with significant instability.

Conservative management is often insufficient for rigid, severe deformities or when there is progressive neurological deterioration, but it remains central in the long-term management of many patients.

Surgical Management

Surgery is indicated when conservative measures fail, when the deformity is markedly rigid, or when there is significant functional impairment or recurrent injury. The choice of procedure depends on the subtype of cavus, the site of the deformity, and the underlying pathology.

Common surgical options include:

• Soft-tissue procedures: Tendon transfers (e.g., flexor digitorum longus to first metatarsal) and lengthening of tight structures (Achilles, plantar fascia) to correct muscle imbalance and improve alignment.
• Osteotomies: Calcaneal osteotomies to reduce hindfoot varus; first-ray elevating osteotomies to correct plantar flexion of the first metatarsal; and midfoot or forefoot osteotomies to address adduction and arch elevation.
• Arthrodesis: In severe, rigid deformities, especially in the context of neuromuscular disease, fusion of selected joints (e.g., subtalar or triple arthrodesis) may be necessary to achieve a stable, plantigrade foot.

Surgical planning must be carefully integrated with the management of the underlying neuromuscular condition, as recurrence or progression may occur if the primary disease is not addressed.

Pes cavus is not merely a structural variant of the foot but a potentially significant clinical sign that warrants thorough evaluation for underlying neuromuscular pathology. Its management requires a nuanced combination of biomechanical understanding, neurological assessment, and tailored treatment ranging from orthotics and physical therapy to complex reconstructive surgery. For podiatrists and allied professionals, recognizing the patterns of cavus deformity, understanding its subtypes, and integrating conservative and surgical options within a broader diagnostic framework are essential to optimising outcomes for patients with this challenging condition.

Peroneal tendonitis is a common yet often under-recognized cause of lateral ankle pain, particularly in athletic populations and individuals with biomechanical abnormalities of the foot and ankle. The condition involves inflammation or degeneration of the peroneal tendons—specifically the peroneus longus and peroneus brevis—as they course posterior to the lateral malleolus and insert into the foot. Given their essential role in dynamic ankle stability and foot function, pathology affecting these tendons can significantly impair gait and athletic performance.

The peroneal tendons originate from the lateral compartment of the leg. The peroneus longus arises from the proximal fibula and lateral tibial condyle, while the peroneus brevis originates more distally from the fibular shaft. Both tendons pass through the retrofibular groove, secured by the superior peroneal retinaculum, before diverging distally. The peroneus brevis inserts onto the tuberosity of the fifth metatarsal, whereas the peroneus longus courses plantarward across the cuboid and inserts at the base of the first metatarsal and medial cuneiform. Functionally, these tendons act to evert the foot and contribute to plantarflexion, while also providing lateral ankle stability, particularly during the stance phase of gait.

Peroneal tendonitis typically arises from repetitive overuse, resulting in microtrauma and subsequent inflammation or tendinopathy. It is frequently observed in runners, especially those who train on uneven surfaces or perform excessive hill running. Sudden increases in training intensity, duration, or frequency are well-established risk factors. Biomechanical contributors play a significant role; individuals with cavovarus foot alignment are particularly predisposed due to increased lateral column loading and chronic tensile stress on the peroneal tendons. Additionally, lateral ankle instability following previous sprains can lead to compensatory overactivation of the peroneal muscles, further exacerbating tendon overload.

Clinically, patients with peroneal tendonitis present with lateral ankle pain that may radiate distally along the course of the tendons. Pain is typically exacerbated by activity, particularly during resisted eversion or passive inversion of the foot. Swelling and tenderness posterior to the lateral malleolus are common findings, and in some cases, crepitus may be appreciated, suggesting tenosynovitis. Chronic cases may demonstrate tendon thickening or weakness in eversion strength. It is important to differentiate peroneal tendonitis from other causes of lateral ankle pain, such as lateral ligament sprains, sinus tarsi syndrome, or fractures of the fifth metatarsal.

Diagnostic evaluation is primarily clinical but may be supplemented by imaging in ambiguous or refractory cases. Ultrasound provides a dynamic, cost-effective modality for assessing tendon integrity, detecting tenosynovitis, and identifying subluxation. Magnetic resonance imaging (MRI) offers superior soft tissue contrast and is particularly useful in evaluating tendon tears, degenerative changes, or associated pathology such as retinacular injury. Imaging is especially indicated when symptoms persist despite conservative management or when surgical intervention is being considered.

Management of peroneal tendonitis is predominantly conservative and focuses on reducing inflammation, correcting biomechanical contributors, and gradually restoring function. Initial treatment typically includes activity modification, rest, and the use of nonsteroidal anti-inflammatory drugs (NSAIDs) where appropriate. Cryotherapy and compression may help manage acute inflammation. Immobilization in a walking boot may be indicated in more severe cases to allow tendon healing.

A key component of treatment involves addressing underlying biomechanical abnormalities. Foot orthoses can be particularly beneficial, especially in patients with cavus or varus alignment. Devices designed to increase lateral forefoot support and reduce excessive supination can offload the peroneal tendons. Lateral wedging or modifications to improve pronatory moments may be considered, depending on the individual’s gait pattern. Footwear modifications, including the use of stable, cushioned shoes with adequate lateral support, are also important in mitigating excessive tendon stress.

Rehabilitation plays a critical role in recovery and prevention of recurrence. Physiotherapy programs typically focus on progressive strengthening of the peroneal muscles, proprioceptive training, and correction of movement patterns. Eccentric loading exercises have shown efficacy in the management of tendinopathies and may be incorporated into rehabilitation protocols. Additionally, addressing proximal kinetic chain deficits, such as hip abductor weakness or poor neuromuscular control, can reduce compensatory loading at the ankle.

In cases where conservative treatment fails, or when structural abnormalities such as tendon tears or subluxation are present, surgical intervention may be warranted. Procedures may include tendon debridement, repair of longitudinal splits, or reconstruction of the superior peroneal retinaculum. Postoperative rehabilitation is essential to restore strength and function, with gradual return to activity over several months.

Prevention of peroneal tendonitis centers on appropriate training practices, biomechanical optimization, and early intervention. Gradual progression of training loads, adequate recovery periods, and cross-training can help minimize overuse injuries. Screening for and addressing biomechanical risk factors, particularly in high-risk populations such as runners, is essential. Education on proper footwear selection and terrain considerations can further reduce the risk of tendon overload.

Peroneal tendonitis is a multifactorial condition that reflects the interplay between mechanical loading, anatomical predisposition, and activity demands. A thorough understanding of the underlying biomechanics and risk factors is essential for accurate diagnosis and effective management. With appropriate conservative care, most patients achieve favorable outcomes; however, recognition of refractory cases and timely referral for advanced imaging or surgical consultation is critical. For clinicians, particularly those involved in sports medicine and podiatry, a comprehensive and individualized approach remains the cornerstone of successful treatment and long-term prevention.

Peroneal spastic flatfoot (PSFF) is a rigid, painful valgus deformity of the foot historically associated with protective spasm of the peroneal muscles, now recognized as a clinical syndrome rather than a single disease entity. While often linked to tarsal coalition, it can also occur in the absence of developmental anomalies, and in many cases the “spasm” is more accurately an adaptive shortening or reactive contraction secondary to an irritative lesion in the peritalar region. Because of its variable etiology and outdated terminology, modern podiatric and orthopedic literature frequently uses broader terms such as “rigid valgus foot” or specifies the underlying pathology (e.g., calcaneonavicular bar, talocalcaneal bridge, inflammatory arthritis)

Definition and Terminology

Peroneal spastic flatfoot describes a foot in which the arch is flattened, the heel is in valgus, and the foot is stiff or rigid, with apparent spasm of the peroneal muscles causing pain and limiting motion. Classic descriptions emphasize unilateral or bilateral rigid flatfoot with peroneal muscle tenderness and a foot that resists manual correction into inversion or neutral.

The term is now considered imprecise by many authors. In cases where tarsal coalition is present, the deformity is primarily a fixed structural problem due to abnormal bone union; the peroneal “spasm” is then an adaptive shortening rather than true primary spasm. In inflammatory cases (e.g., rheumatoid arthritis), peroneal spasm may be more genuine, but these are better classified separately as arthritic flatfoot with peroneal spasm. Consequently, contemporary texts often prefer “rigid flatfoot due to [specific coalition]” or reserve PSFF for idiopathic presentations where no coalition or other cause is identified.

Etiology

The most common cause of PSFF is tarsal coalition, particularly calcaneonavicular bars and talocalcaneal bridges. These congenital or developmental unions between tarsal bones restrict motion at the subtalar and peritalar joints, producing a rigid valgus deformity and peroneal irritation. Radiographs with special oblique views are often required to detect rudimentary forms of these coalitions.

However, PSFF can occur without detectable tarsal anomalies. Historical series have documented cases with normal tarsal skeletons in which peroneal spasm was clinically evident, suggesting that any irritative lesion in the peritalar region—such as trauma, sinus tarsi pathology, neoplasm, or inflammatory disease—can provoke protective peroneal contraction and a rigid flatfoot posture. Idiopathic peroneal spastic flatfoot (IPSF) is used when no cause is found after thorough clinical, laboratory, and imaging evaluation.

Less common etiologies include inflammatory arthropathies (notably rheumatoid arthritis), where true peroneal spasm may accompany joint destruction, and rare neoplasms manifesting as a rigid flatfoot deformity. Heavy mechanical stress on an architecturally abnormal or even normal foot is also hypothesized to contribute, with tarsal anomalies increasing susceptibility to breakdown under average stress.

Clinical Features

Patients typically present in childhood or adolescence with a painful, stiff foot that is flat and in valgus. The deformity is often unilateral but can be bilateral. The foot is rigid: inversion and abduction are limited, and the foot cannot be passively corrected into a neutral or varus position. Peroneal tenderness along the lateral foot and behind the lateral malleolus is characteristic, and patients may report pain in the sinus tarsi or lateral aspect of the foot

Gait may show an antalgic pattern, with avoidance of pronation and altered weight distribution. There may be a history of recurrent ankle sprains or minor trauma, but in some cases the onset appears spontaneous. In older children and adolescents, the deformity may be more established, with secondary changes in the soft tissues and alignment of the lower limb.

Diagnosis

Diagnosis relies on clinical examination, plain radiography, and advanced imaging. Clinical assessment confirms a rigid valgus flatfoot with peroneal tenderness and limited subtalar motion. Standard weight-bearing radiographs show a flattened longitudinal arch, valgus tilt of the calcaneus, and possible uncovering of the talonavicular joint

Specialized radiographic views (e.g., oblique calcaneonavicular views, lateral talar–calcaneal angle) are essential to detect calcaneonavicular bars and talocalcaneal bridges, which may be missed on routine films. CT is now the gold standard for defining the morphology and extent of tarsal coalitions, while MRI is valuable for evaluating soft tissue irritation, sinus tarsi pathology, and inflammatory or neoplastic processes. In cases where no coalition is identified, the diagnosis of IPSF is considered, and further investigation for inflammatory, neurologic, or neoplastic causes is warranted.

Management

Conservative management is the initial approach, particularly in children and those with mild symptoms. This includes activity modification, avoidance of high-impact loading, and use of immobilization or short-term casting in severe, refractory cases to reduce peroneal irritation and restore some flexibility. Orthotic devices designed to support the medial arch, control valgus, and offload the peroneal tendons are commonly used, along with physical therapy to improve peroneal and intrinsics strength and flexibility.

Surgical intervention is indicated when there is persistent pain, functional limitation, or progressive deformity despite conservative measures. For coalitions, the standard procedure is resection of the bar with interposition of fat, tendon, or other material to prevent recurrence and restore motion. In idiopathic cases or when resection is not feasible, procedures such as peroneal tendon lengthening, medial soft-tissue releases, or corrective osteotomies (e.g., calcaneal osteotomy, triple arthrodesis) may be required, depending on the degree of rigidity and deformity. The choice of procedure is guided by the underlying etiology, age, and functional demands of the patient.

Peroneal spastic flatfoot is best understood as a heterogeneous clinical syndrome characterized by rigid valgus flatfoot with peroneal irritation, rather than a single pathologic entity. While tarsal coalition is the predominant cause, idiopathic and inflammatory forms exist, and the term “spastic” is often misleading. Accurate diagnosis requires careful imaging to identify or exclude coalitions and other structural abnormalities, and management should be tailored to etiology, with conservative measures first and surgery reserved for refractory or advanced cases.

Heel pain is most commonly caused by overload or inflammation of the plantar fascia or Achilles tendon, but it can also arise from bony, neural, and systemic disorders. Because the heel tolerates significant ground reaction forces during weight-bearing, even subtle biomechanical or tissue changes can produce disabling symptoms. This essay outlines the principal causes of heel pain, grouped by anatomical region and mechanism, with reference to underlying pathophysiology and clinical context.

Plantar (inferior) heel pain

Plantar fasciitis

Plantar fasciitis is the single most common cause of heel pain. The plantar fascia is a thick aponeurosis that extends from the medial calcaneal tuberosity to the bases of the toes, acting as a dynamic stabiliser of the foot arch. Repetitive tensile loading—particularly with excessive pronation, tight calf muscles, or sudden increases in activity—produces microtrauma and degenerative changes at the fascial origin rather than purely inflammatory ones. Clinically, this manifests as sharp, focal pain at the medial inferior heel, often worst with the first steps after rest and improved with mild activity, then returning after prolonged standing.

Risk factors include obesity, flat feet or rigid high arches, abnormal gait (e.g. overpronation), prolonged standing on hard surfaces, and wearing shoes with poor cushioning or support. In chronic cases, traction at the calcaneal attachment may stimulate a plantar heel spur; the spur itself is often not painful, but reflects the same biomechanical overload that drives fasciitis.

Heel spur and fat pad atrophy

Heel spurs are bony projections that can develop on the inferior calcaneus in association with chronic plantar fasciitis or traction. While many patients with spurs are asymptomatic, some experience localized inferior heel pain, especially during weight-bearing after rest. Fat pad atrophy refers to thinning of the subcutaneous cushion beneath the calcaneus, commonly seen in older adults or after repeated steroid injections. Loss of this natural padding reduces shock absorption, producing deep, central heel pain that worsens with barefoot walking and improves when the patient walks on their toes, thereby shifting load away from the central heel.

Calcaneal stress fracture and bruising

Calcaneal stress fractures result from repetitive overload, often in runners, military personnel, or individuals who suddenly increase activity on hard surfaces. Pain is typically diffuse over the heel, present with weight-bearing, and may not improve with rest; compression of the calcaneus from side to side often reproduces pain. Early radiographs can be normal, necessitating MRI or bone scan for diagnosis. Acute heel bruise (contusion) occurs after a direct impact, such as landing from a jump or stepping on a hard object, causing localized pain and sometimes swelling.

Posterior (back of heel) pain

Achilles tendinitis and tendinopathy

Achilles tendinitis (more accurately, tendinopathy) is a common cause of posterior heel pain, affecting the tendon that connects the calf muscles to the calcaneus. Repetitive microtrauma from running, jumping, or abrupt increases in training load leads to degeneration and failed healing within the tendon, often with associated swelling and pain 2–6 cm above the calcaneal insertion. Pain is typically worse at the start of activity, may ease with warming up, and then recur after prolonged use. Risk factors include tight gastrocnemius–soleus muscles, poor footwear, and biomechanical abnormalities such as excessive pronation or hindfoot varus.

Retrocalcaneal bursitis and Haglund’s deformity

Retrocalcaneal bursitis involves inflammation of the bursa between the Achilles tendon and the anterior surface of the calcaneus, producing pain and swelling at the back of the heel, often with redness. It is frequently associated with Haglund’s deformity, a bony prominence on the posterosuperior calcaneus that impinges on surrounding soft tissues during ankle motion. The combination of bony enlargement and repetitive friction can cause significant pain, especially in active individuals or those wearing rigid-backed shoes.

Achilles tendon rupture

A complete or partial rupture of the Achilles tendon typically occurs after a sudden, forceful push-off or landing, often with a audible “pop” and immediate inability to calf-rise or walk normally. Pain may be severe initially but can become less intense as the tendon heals in a non-functional position, leading to persistent weakness and gait abnormality.

Medial, lateral, and neural causes

Tarsal tunnel syndrome and nerve compression

Tarsal tunnel syndrome results from compression of the posterior tibial nerve as it passes through the tarsal tunnel on the medial aspect of the foot, producing burning pain, tingling, or numbness in the heel and arch. Tenderness over the tunnel and a positive Tinel’s sign support the diagnosis. Baxter’s nerve compression, involving the first branch of the lateral plantar nerve, can mimic plantar fasciitis with medial plantar heel pain and is often under-recognized in runners. Peripheral neuropathy, particularly in diabetes, can also produce diffuse or burning heel pain, often with altered sensation and decreased protective reflexes.

Referred pain from lumbar radiculopathy

Pain on the lateral aspect of the foot and heel may be referred from an L5–S1 disc herniation compressing the S1 nerve root, leading to radicular symptoms that include pain, hypoesthesia, and sometimes weakness in the hamstring and calf muscles. In such cases, heel pain is part of a broader pattern of neuropathic symptoms rather than a local foot pathology.

Systemic and inflammatory conditions

A range of systemic diseases can present with heel pain. Rheumatoid arthritis, psoriatic arthritis, reactive arthritis, and ankylosing spondylitis may cause inflammatory pain in the Achilles tendon insertion, plantar fascia, or surrounding joints, often with morning stiffness and bilateral involvement. Paget’s disease of bone, osteomyelitis, and bone tumors are less common but important considerations, particularly when pain is persistent, progressive, and not clearly related to mechanical loading. Plantar warts can cause focal inferior heel pain, especially when located under the calcaneal area, and are distinguished by their characteristic surface appearance and tenderness with lateral compression.

Biomechanical and lifestyle contributors

Many causes of heel pain are strongly influenced by biomechanics and lifestyle. Abnormal walking patterns, such as overpronation or excessive supination, alter load distribution across the plantar fascia, Achilles tendon, and calcaneus, predisposing to overload injuries. Obesity increases ground reaction forces and tensile stress on the plantar fascia and fat pad, accelerating wear and tear. Ill-fitting shoes, particularly those with poor arch support, inadequate cushioning, or excessively rigid heel counters, fail to attenuate shock and can exacerbate local pathology. Activities involving repetitive jumping, running, or prolonged standing on hard surfaces are frequent precipitants of both plantar fasciitis and Achilles tendinopathy.

In children, Sever’s disease (calcaneal apophysitis) is a common cause of heel pain, resulting from stress on the growth plate of the calcaneus during periods of rapid growth and high activity levels. This condition is typically self-limiting but requires activity modification and appropriate footwear to prevent chronicity.[

Heel pain arises from a diverse set of causes, but the majority are mechanical in nature, involving the plantar fascia, Achilles tendon, calcaneal bone, or surrounding soft tissues. Plantar fasciitis and Achilles tendinopathy dominate the clinical picture, while stress fractures, fat pad atrophy, nerve compressions, and systemic inflammatory conditions represent important secondary categories. Understanding the anatomical location of pain, associated symptoms, and contributing biomechanical and lifestyle factors is essential for accurate diagnosis and targeted management. In a podiatric context, this knowledge supports both clinical assessment and the development of individualized treatment strategies, including footwear modification, orthotic prescription, gait retraining, and, where necessary, advanced imaging or referral.

Pain on the top of the foot is a common complaint that can affect athletes, active adults, and people who simply spend long hours on their feet. Although the symptom may seem minor at first, it can significantly interfere with walking, running, and everyday activities. The top of the foot contains tendons, bones, joints, ligaments, and nerves packed into a small area, so pain there can arise from many different structures. Understanding the likely cause is important because treatment depends on whether the problem is mechanical, inflammatory, traumatic, or neurological.

One of the most frequent causes of pain on the top of the foot is overuse. Activities such as running, jumping, kicking, and repeated walking can overload the extensor tendons that run along the top of the foot, leading to extensor tendinitis. This condition is often associated with tight or poorly fitting shoes, especially footwear that compresses the dorsal aspect of the foot or laces too tightly across the midfoot. The result is pain that may worsen with activity and improve with rest. In many cases, people notice tenderness when pressing on the top of the foot, swelling, or discomfort when pulling the toes upward.

Stress fractures are another important cause, particularly in physically active individuals. A stress fracture is a small crack in a bone caused by repeated loading rather than a single major injury. In the foot, the metatarsals and midfoot bones are common sites of injury, and the pain often begins gradually before becoming more constant. Swelling and pain with weight-bearing are typical, and the discomfort may become sharp during walking or running. Because stress fractures can worsen if ignored, persistent pain on the top of the foot after increased training or impact activity should be assessed carefully.

Direct trauma can also cause dorsal foot pain. Dropping an object on the foot, stubbing it forcefully, or twisting the foot can injure soft tissues, ligaments, or bone. Sprains and strains may produce bruising, swelling, and reduced movement, while fractures can cause more severe pain and difficulty bearing weight. The presence of marked swelling, bruising, or an inability to walk normally increases concern for a more serious injury. In these cases, the pain is often abrupt rather than gradual, which helps distinguish trauma from overuse problems.

Joint disease is another possible explanation. Osteoarthritis and rheumatoid arthritis can affect the joints of the foot, including the metatarsophalangeal joints and the midfoot, leading to stiffness, swelling, and pain on the top of the foot. In osteoarthritis, bone spurs can develop and may irritate the surrounding tissues. These problems are often worse in the morning or after periods of rest, and may become more noticeable during activities that require bending of the foot. Arthritis-related pain tends to be chronic or recurring rather than isolated to one event.

Gout is a less common but very important cause. It is caused by uric acid crystal deposition in a joint, producing sudden pain, redness, warmth, and swelling. Although gout most often affects the big toe joint, it can also involve other parts of the foot, including the top of the foot. The pain is usually intense and may be so severe that even light touch is uncomfortable. When the skin is hot and swollen and the pain comes on rapidly, gout should be considered alongside infection and other inflammatory conditions.

Nerve-related causes can also produce pain on the top of the foot. Compression or irritation of nerves may cause burning, tingling, numbness, or radiating pain. Sciatica or peroneal nerve dysfunction can refer symptoms into the dorsum of the foot, and dorsal compression syndrome may occur when local structures pinch nerves on the top of the foot. These symptoms are often different from bone or tendon pain because they may be accompanied by altered sensation, weakness, or pain extending up the leg. In patients with diabetes, peripheral neuropathy may also contribute to pain, tingling, or numbness in the feet.

A careful history and examination are essential in working out the cause. Key questions include when the pain started, whether it followed a specific injury, what activities worsen it, whether shoes contribute, and whether there are associated symptoms such as swelling, bruising, redness, numbness, or stiffness. For example, pain that developed after a sudden increase in running mileage suggests overuse or stress fracture, while pain with red, hot swelling points more toward gout or inflammation. Physical examination may reveal focal tenderness, pain with tendon movement, joint stiffness, or sensory changes. Imaging such as X-ray, ultrasound, or MRI may be needed when fracture or a more complex injury is suspected

Treatment depends on the underlying cause, but several general measures are commonly helpful. Resting the foot, reducing aggravating activity, icing the area, and elevating the foot can reduce pain and swelling. Supportive footwear is important, especially shoes with adequate width, cushioning, and a low heel that do not compress the top of the foot. Over-the-counter pain relief may help in some cases, and gentle stretching or mobility work can be useful when tendons are involved. For biomechanical issues, inserts or orthotics may help redistribute pressure and improve support. If a fracture is present, immobilisation with a boot or cast may be necessary.

Knowing when to seek medical help is equally important. Persistent pain, worsening symptoms, significant swelling, bruising, difficulty walking, or numbness should not be ignored. Pain that does not improve after a period of home treatment, or pain that follows trauma, deserves professional assessment. Severe or sudden pain with redness and heat may require urgent evaluation to rule out gout, infection, or fracture. Early diagnosis generally leads to faster recovery and lowers the risk of chronic foot problems.

In summary, pain on the top of the foot is a symptom with many possible causes, ranging from simple shoe irritation to stress fracture, arthritis, gout, or nerve entrapment. The pattern of onset, associated symptoms, and response to activity help narrow the diagnosis. Most cases improve with rest, proper footwear, and targeted treatment, but ongoing or severe pain should be assessed to prevent longer-term problems.

Night splints are a useful conservative treatment for plantar fasciitis, especially for patients who wake with strong first-step pain, but their benefit is usually greatest in the short term rather than as a stand-alone long-term cure.

Plantar fasciitis is one of the most common causes of plantar heel pain in active and sedentary adults, and it typically presents with sharp pain on the first steps in the morning or after periods of rest. Night splints are designed to reduce that familiar morning pain by holding the ankle in dorsiflexion and keeping the plantar fascia under a gentle stretch overnight. In practice, they are most often used for patients whose symptoms persist despite basic measures such as stretching, activity adjustment, and supportive shoes.

How Night Splints Work

The underlying idea is simple: during sleep, the foot tends to rest in plantarflexion, which allows the plantar fascia and calf complex to tighten. When the patient stands up in the morning, that shortened tissue is suddenly loaded, contributing to the classic “first-step” pain of plantar fasciitis. By maintaining a sustained stretch through the night, the splint may reduce this tightening and make morning steps less painful.

This mechanism also makes night splints conceptually similar to prolonged stretching, but with the advantage that the stretch is passive and occurs during rest. Some splints are bulkier posterior boot designs, while others are lower-profile dorsal strap devices; both aim to hold the ankle in dorsiflexion, but comfort and adherence can differ. The best device is often the one the patient will actually tolerate consistently.

Evidence and Effectiveness

The evidence supports night splints as a reasonable option, but not as a guaranteed solution. A clinical trial reported significant short-term relief when a night splint was added to conservative management, although it did not reduce recurrence at two years. A separate review in primary care literature noted that custom-made night splints may help, while prefabricated options had less convincing benefit. More recent clinical practice guidance recommends a 1- to 3-month night splint program for patients who consistently have first-step morning pain.

That said, the literature is not uniformly enthusiastic. Some reports suggest night splints improve symptoms mainly while they are being used, with less clear long-term superiority over exercise-based care alone. For an academic essay, this tension is important: night splints are evidence-informed, but their role is best described as adjunctive and symptom-focused rather than curative.

Clinical Use

Night splints are usually prescribed for patients with persistent plantar fasciitis, especially those with pronounced morning pain or symptoms lasting more than several weeks. They are commonly introduced after or alongside stretching programs, calf flexibility work, and advice on reducing aggravating loads. The usual course is about 1 to 3 months, with reassessment if symptoms fail to improve.

Comfort and adherence matter a great deal. Instructions for use commonly emphasize adjusting straps so the device is snug but not overly tight, and reducing tension if numbness, tingling, or other discomfort occurs. Some clinicians advise a gradual break-in period, because immediate overnight wear may be uncomfortable for some patients. If used poorly or inconsistently, even a theoretically effective treatment may fail.

Advantages and Limitations

The main advantages of night splints are their non-invasive nature, low cost relative to procedural interventions, and ability to target the troublesome morning pain pattern. They can be especially attractive for patients who want to avoid injections or surgery while still doing something active about their symptoms. Because they work passively, they may also suit patients who struggle to keep up with frequent stretching routines.

The limitations are equally important. Night splints can be uncomfortable, interfere with sleep, and reduce adherence, particularly if the splint is bulky or tightly fitted. Evidence also suggests that their effect may be temporary, and they should not be presented as a definitive solution for all cases of plantar fasciitis. In severe or atypical cases, clinicians must also consider other diagnoses such as stress injury, nerve entrapment, or systemic inflammatory disease.

Place in Management

A balanced management model places night splints within a broader conservative plan. That plan usually includes calf and plantar fascia stretching, load management, footwear advice, and possibly orthoses or other adjunctive treatment depending on the clinical picture. For runners or highly active patients, this integrated approach is especially relevant because symptoms often reflect both tissue irritability and mechanical overload.

From a podiatric perspective, the strongest argument for night splints is that they address a very specific symptom pattern: first-step morning pain. They are less compelling as a universal treatment for every case of heel pain. Therefore, the most accurate academic conclusion is that night splints are a practical, evidence-supported adjunct that may reduce symptoms and improve function, particularly in the short term, but they work best when combined with other conservative measures.

Night splints remain a clinically useful option for plantar fasciitis because they target the overnight shortening that contributes to morning heel pain. The evidence supports their use as part of conservative care, especially in patients with persistent first-step pain, but their benefits are strongest when combined with stretching and other load-reducing strategies. In an essay, the most defensible position is that they are helpful, low-risk, and worth trialling in selected patients, while acknowledging variable comfort and limited long-term superiority.

is a common but often under-recognized cause of pain on the top and middle of the foot, especially in middle-aged and older adults. It affects the joints that support the arch—most often the tarsometatarsal, naviculocuneiform, and talonavicular joints—and can lead to pain, altered foot shape, and difficulty with walking and standing.

Midfoot osteoarthritis

Midfoot osteoarthritis (OA) refers to degenerative change in one or more joints of the midfoot, the region between the hindfoot and forefoot. The midfoot has relatively limited motion under normal conditions, but it plays an essential role in load transfer, arch support, and foot stability during gait. When osteoarthritis develops, the articular cartilage deteriorates, the joint surfaces become irregular, and the surrounding bone responds with sclerosis and osteophyte formation.

Although midfoot OA can occur as primary idiopathic disease, it is also associated with previous injury, chronic abnormal loading, flatfoot posture, obesity, manual work, and other weight-bearing joint pain. Symptomatic disease is more common with increasing age and is reported particularly in women and people with a history of foot or ankle trauma.

Clinical features

The typical presentation is dorsal or central midfoot pain that worsens with walking, standing, stairs, or prolonged activity. Patients often report swelling, tenderness over the affected joints, and a bony prominence on the top of the foot. Morning stiffness may occur, but in the midfoot the more prominent complaint is usually load-related pain rather than a dramatic loss of motion.

As the condition advances, the arch may flatten and the foot may appear broader or more collapsed, especially if the condition is associated with pronation or progressive midfoot instability. Symptoms can range from mild intermittent discomfort to constant pain that interferes with work, exercise, and routine daily tasks

Diagnosis

Diagnosis begins with a careful history and physical examination, focusing on pain location, aggravating activities, deformity, swelling, and tenderness over the tarsometatarsal and naviculocuneiform joints. Plain radiographs are usually the first imaging test and may show joint-space narrowing, dorsal osteophytes, subchondral sclerosis, and collapse or malalignment in more advanced disease.

When the diagnosis is uncertain or surgery is being considered, additional imaging such as weight-bearing radiographs, CT, MRI, or diagnostic injections may help identify the exact joints involved and the degree of arthritic change. This is especially useful in the midfoot because pain can arise from more than one joint and clinical localization can be imperfect.

Non-surgical care

Initial treatment is usually non-operative and aims to reduce joint load, calm inflammation, and preserve function. Common measures include activity modification, weight management, analgesics or anti-inflammatory medication, footwear changes, stiff-soled shoes or rocker-bottom soles, and orthoses that support the medial arch and limit painful midfoot motion.

Orthotic treatment is often central because the midfoot is a load-sharing structure and reducing movement across arthritic joints can significantly improve symptoms. In practice, this may include arch-supporting devices, stiff shank modifications, and foot orthoses designed to improve alignment and distribute pressure more evenly. Calf stretching and physiotherapy may also help in selected patients, particularly where equinus or altered mechanics contribute to excessive midfoot loading.

Corticosteroid injection may be used for short-term symptom relief, especially when one or two joints are clearly symptomatic. Injections can also have diagnostic value by confirming the pain generator before a more definitive procedure is planned.

Surgical treatment

Surgery is considered when pain remains disabling despite appropriate conservative care or when deformity and collapse are progressing. The main surgical option for advanced disease is arthrodesis, or fusion, of the affected midfoot joints to remove painful motion and restore alignment.

Fusion is generally most useful in patients with localized arthritic pain, structural collapse, or a painful deformity that cannot be controlled with footwear and orthoses. In milder cases with prominent dorsal osteophytes but limited joint destruction, debridement or spur excision may be considered, though this does not reverse arthritis. The choice of operation depends on the joints involved, the degree of deformity, activity demands, and bone quality.

Functional impact

Midfoot OA can have a major effect on quality of life because the foot is exposed to high repetitive loads with every step. Pain may limit walking distance, reduce participation in sport and exercise, and make occupational standing difficult. The condition can also alter gait and load transfer to adjacent joints, potentially contributing to compensatory problems elsewhere in the foot or lower limb.

A useful way to think about the condition is that the patient often does not complain of “stiffness” in the classic arthritic sense, because the midfoot is already relatively stiff. Instead, they notice pain from the top of the foot, aching in the arch, swelling, or a change in foot shape that signals structural failure under load.

Midfoot osteoarthritis is a disabling degenerative condition involving the joints that support the arch and transfer load through the foot. Its hallmark features are activity-related midfoot pain, dorsal tenderness or bony prominence, and sometimes progressive flattening of the arch

Management should begin with careful diagnosis and staged conservative treatment, particularly footwear modification and arch-supporting orthoses, with injections or fusion reserved for persistent or advanced cases. Because the midfoot is biomechanically central to gait, successful treatment depends on addressing both pain and load redistribution rather than simply treating inflammation.

Mueller Weiss syndrome is a rare, progressive adult foot disorder affecting the navicular bone in the midfoot, often causing chronic medial midfoot and hindfoot pain, arch collapse, and deformity. It typically affects adults in the 40 to 60 age range and is more common in women, and it is often misdiagnosed because its symptoms overlap with other causes of midfoot pain.

Mueller Weiss syndrome, also called Müller-Weiss syndrome or Brailsford disease, is an uncommon condition characterized by spontaneous osteonecrosis and deformity of the tarsal navicular bone in adults. The navicular sits at the top of the medial longitudinal arch and plays a central role in force transmission through the midfoot, so structural failure in this bone can have major biomechanical consequences. Although the exact cause remains uncertain, the condition is widely understood as multifactorial, with proposed contributions from abnormal loading, congenital navicular dysplasia, ischemia, and prior trauma.

Pathology and causes

The defining feature of the syndrome is progressive collapse and fragmentation of the navicular, usually beginning later in life rather than in childhood. This distinguishes it from Köhler disease, which is navicular osteochondrosis in children. In adult disease, the navicular may become compressed, flattened, and laterally collapsed, producing the classic “comma-shaped” appearance on imaging. Some authors describe the process as spontaneous osteonecrosis, while others emphasize a combination of dysplasia, mechanical overload, and degenerative change.

Clinical presentation

Patients usually present with insidious medial midfoot pain, often accompanied by hindfoot pain, stiffness, and difficulty walking or standing for long periods. The deformity may be bilateral, though it can be asymmetric, and pes planovarus or progressive flattening of the arch is common. Tenderness over the navicular region, reduced midfoot motion, and pain with weight-bearing are typical findings. Because onset is gradual and symptoms are nonspecific, the disorder can be mistaken for posterior tibial tendon dysfunction, midfoot arthritis, stress fracture, or nonspecific flatfoot pain.

Imaging findings

Radiography is usually the first and most useful investigation, showing collapse of the lateral navicular with medial or dorsal extrusion of part of the bone or the whole navicular. CT can better define sclerosis, fragmentation, and the degree of collapse, while MRI is valuable for early disease because it detects marrow edema and other signal changes. Imaging also helps stage severity and guide treatment planning, especially when surgical reconstruction is being considered. In advanced cases, adjacent joints may show degenerative change as the deformity alters midfoot mechanics.

Management

Initial treatment is usually conservative and focuses on reducing pain and mechanical stress across the midfoot. This may include activity modification, analgesics or anti-inflammatory medication, custom orthotics, supportive footwear, bracing, and sometimes immobilization. These measures aim to offload the navicular, support the arch, and reduce symptoms, but they do not reverse the deformity. If symptoms remain severe or deformity progresses, surgery may be necessary, often involving fusion procedures such as talonavicular or talonavicular-cuneiform arthrodesis, sometimes combined with bone grafting.

Prognosis and significance

The prognosis depends largely on the stage at diagnosis and the severity of collapse and arthritis. Some patients respond reasonably well to conservative care, but others develop persistent pain and disability that affect mobility and quality of life. Because the condition is uncommon and easy to miss, delayed diagnosis is a major problem; by the time it is recognized, structural damage may already be advanced. For that reason, Mueller Weiss syndrome should be considered in adults with chronic midfoot pain, especially when imaging shows navicular deformity and arch collapse.

Mueller Weiss syndrome is an important but under-recognized cause of adult midfoot pain caused by progressive navicular collapse and deformity. Its clinical importance lies in its tendency to mimic more common foot disorders while steadily worsening if not properly identified. Early recognition, appropriate imaging, and staged treatment can reduce pain, preserve function, and help prevent progression to severe midfoot arthritis and deformity.

Morton’s neuroma is a painful condition caused by thickening and irritation of a nerve in the forefoot, most often between the third and fourth toes. It commonly feels like walking on a pebble, with burning, stabbing, tingling, or numbness in the ball of the foot, and symptoms are often worsened by tight shoes, high heels, or repetitive forefoot loading such as running.

Morton’s Neuroma in the Foot

Morton’s neuroma is a compressive neuropathy affecting the interdigital nerve, usually in the third intermetatarsal space and less commonly in the second. Although it is called a neuroma, it is not a true tumour; rather, it is a fibrotic enlargement and irritation of the nerve caused by chronic pressure or traction. The condition is most often discussed in relation to female patients and people who frequently wear narrow or high-heeled footwear, though it can occur in anyone exposed to repetitive forefoot stress

Causes and Risk Factors

The exact cause of a Morton Neuroma is not always clear, but the condition is strongly associated with mechanical compression of the nerve. Tight toe boxes, pointy shoes, and high heels increase pressure across the forefoot, while running and other high-impact activities can repeatedly irritate the nerve. Foot structure also matters: bunions, hammertoes, flat feet, and high arches may alter load distribution and contribute to nerve irritation.

Symptoms and Clinical Features

The classic symptom of a Morton’s neuroma is sharp or burning pain in the ball of the foot, usually radiating into the adjacent toes. Many people describe a sensation of “walking on a marble” or having a stone stuck under the foot. Tingling, numbness, or pain that increases when standing, walking, or wearing restrictive shoes is also common.

Diagnosis

Diagnosis is usually clinical, based on the history and location of pain. A clinician may reproduce symptoms by squeezing the forefoot or by palpating the affected web space, and imaging such as ultrasound or MRI can be used when the diagnosis is unclear or when other conditions need to be excluded. Because forefoot pain can also come from metatarsalgia, stress fracture, plantar plate injury, or intermetatarsal bursitis, a careful differential diagnosis is important.

Conservative Treatment

Initial treatment is usually non-surgical. The most important step is reducing pressure on the nerve by switching to wide, supportive shoes with a low heel and soft sole, and by avoiding tight or pointy footwear. Padding, soft insoles, activity modification, and reducing running or jumping may also ease symptoms. If pain persists, corticosteroid injections, custom orthoses, or other specialist treatments may be considered.

Surgical Management

Surgery is generally reserved for persistent cases that do not respond to conservative care. The main procedures are decompression of the nerve or excision of the affected nerve segment, and both can provide good pain relief in selected patients. A key trade-off is postoperative numbness in the toes supplied by the removed or released nerve, which patients should understand before deciding on surgery.

Morton’s neuroma is a common and often frustrating cause of forefoot pain, but it is usually manageable once correctly identified. Because symptoms are closely linked to shoe choice and loading patterns, early treatment often focuses on reducing compression and improving foot mechanics. For persistent cases, injections or surgery may be needed, but many patients improve with appropriately targeted conservative care.

Metatarsalgia refers to pain in the plantar forefoot, most commonly beneath the second, third, and fourth metatarsal heads. Although the term literally means “metatarsal pain,” it is best understood as a symptom complex rather than a single diagnosis. In practice, it describes pain in the ball of the foot arising from a wide range of mechanical, inflammatory, degenerative, traumatic, and structural causes. Because the forefoot bears substantial load during standing, walking, running, and jumping, even small disturbances in foot function can produce significant discomfort.

The condition is common in both general and clinical populations, particularly among people with abnormal gait mechanics, foot deformity, or repetitive loading. Pain is often aggravated by weight-bearing activity and relieved by rest, but the exact pattern depends on the underlying cause. Some patients describe a sharp, burning, or aching pain, while others report a sensation similar to walking on a pebble. Since metatarsalgia is a syndrome rather than a definitive disease, careful assessment is needed to identify the specific tissue or biomechanical problem responsible.

Causes and risk factors

The causes of metatarsalgia are best divided into primary and secondary forms. Primary metatarsalgia is usually related to mechanical overload of the metatarsal heads. This may occur when weight is shifted excessively onto the lesser metatarsals because of hallux valgus, hallux rigidus, a first-ray dysfunction, long metatarsals, pes planus, excessive pronation, or high-heeled or poorly cushioned footwear. When the normal load-sharing role of the first ray is reduced, the lesser metatarsals may be forced to absorb greater pressure, leading to pain and local inflammation

Secondary metatarsalgia arises when another pathology causes forefoot pain. Examples include Morton’s neuroma, intermetatarsal bursitis, stress fracture, arthritis, gout, rheumatoid arthritis, infection, and sequelae of prior surgery or trauma. Age-related thinning of the plantar fat pad is also relevant, because it reduces natural shock absorption beneath the metatarsal heads. High-impact sports, sudden increases in training volume, excess body weight, and prolonged standing can all increase forefoot stress and worsen symptoms.

Footwear is a major modifiable factor. Tight toe boxes, elevated heels, minimal cushioning, and shoes that do not match the activity can all increase pressure under the forefoot. In athletic populations, repetitive impact and insufficient recovery time are common contributors. In older adults, structural deformities and loss of soft tissue padding often play a larger role. The condition is therefore multifactorial, and in many patients several factors coexist.

Clinical features

Patients with metatarsalgia usually present with pain localized to the ball of the foot, often described beneath one or more metatarsal heads. The pain is commonly worse during walking, running, push-off, or standing on hard surfaces. Some people notice that they avoid bearing weight through the painful area, which can lead to compensatory gait changes and additional symptoms elsewhere in the lower limb.

Clinical examination may reveal tenderness on palpation over the metatarsal heads, callus formation from chronic pressure, reduced joint mobility, toe deformities, or signs of associated pathology such as a neuroma or stress fracture. Because pain in this region can have many causes, the diagnosis should not stop at the label “metatarsalgia.” Rather, it should identify whether the underlying problem is mechanical overload, joint disease, nerve irritation, or osseous injury.

Assessment and diagnosis

Diagnosis is primarily clinical and begins with a thorough history. Important questions include the onset and duration of pain, aggravating activities, footwear habits, recent changes in exercise, and the presence of systemic disease or previous foot surgery. Examination should assess foot posture, metatarsal length pattern, first-ray function, toe alignment, ankle range of motion, callus distribution, and areas of focal tenderness. When a specific structural or inflammatory cause is suspected, imaging or further medical assessment may be required.

Differential diagnosis is essential because several conditions mimic metatarsalgia. Morton’s neuroma often produces burning or tingling pain with possible numbness into the toes. Stress fractures may cause focal tenderness and pain after activity increases. Inflammatory arthritis, sesamoid disorders, and bursitis can also present with forefoot pain. A precise diagnosis matters because management differs depending on the driver of symptoms

Management principles

Most cases improve with conservative management. The aim is to reduce load on the painful area, correct contributing biomechanics, and address aggravating activities. Rest or activity modification is often the first step, especially if the problem has been triggered by running, jumping, or prolonged standing. Switching temporarily to low-impact exercise can help maintain fitness while the forefoot settles.

Footwear modification is fundamental. Supportive shoes with adequate cushioning, a wide toe box, and avoidance of high heels can reduce metatarsal loading. Metatarsal pads, arch supports, and orthoses are commonly used to redistribute pressure away from the painful region. In some patients, custom orthoses are useful when there is a structural abnormality or recurrent overload pattern. Stretching the calf and addressing tight posterior chain mechanics may also reduce forefoot pressure during gait.

Pharmacological and procedural options are generally adjunctive. Simple analgesics and nonsteroidal anti-inflammatory drugs can help with pain and inflammation, though they do not correct the cause. If an associated condition such as Morton’s neuroma, bursitis, or inflammatory arthritis is present, targeted treatments such as corticosteroid injection may be appropriate. Surgical treatment is reserved for persistent, severe, or structurally driven cases that fail conservative care. When surgery is needed, it should be directed at the specific deformity or lesion rather than the symptom label itself.

Prevention and prognosis

Prevention focuses on load management and early correction of biomechanical contributors. Appropriate footwear, gradual training progression, maintenance of healthy body weight, and early management of deformity or fat-pad loss can reduce the likelihood of recurrence. For athletes, modifying running volume, surface, and shoe choice may prevent overload. For older adults, periodic review of shoe wear and orthotic support can be helpful.

The prognosis is usually good when the cause is identified and addressed early. Many patients respond well to offloading, footwear change, and orthotic intervention. Chronic or recurrent symptoms are more likely when underlying deformity, inflammatory disease, or repetitive overload persists. A key clinical principle is that metatarsalgia is not a final diagnosis but a signal that the forefoot is under abnormal stress. Treating the stress pattern, rather than only the pain, gives the best chance of lasting recovery.