Musculoskeletal · Foot and Ankle Disorders
The facts most likely to be tested
Plantar fasciitis presents with inferior heel pain that is characteristically worst with the first steps in the morning or after periods of inactivity.
The physical exam reveals point tenderness at the medial calcaneal tubercle where the plantar fascia originates.
Passive dorsiflexion of the toes while palpating the fascia typically reproduces the patient's pain.
The diagnosis is primarily clinical, and imaging is generally reserved for cases that fail to improve after several months of conservative therapy.
First-line management consists of activity modification, stretching exercises for the Achilles tendon and plantar fascia, and orthotic shoe inserts.
Radiographic findings, such as a calcaneal spur, are often incidental and do not correlate with the severity of symptoms or the diagnosis of plantar fasciitis.
Corticosteroid injections should be used with caution due to the risk of plantar fascia rupture or fat pad atrophy.
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A 45-year-old runner presents to the clinic complaining of persistent right heel pain for the past 3 months. He notes that the pain is most severe when he takes his first steps out of bed in the morning but improves slightly as he walks around. On physical examination, there is focal tenderness at the medial calcaneal tubercle. Passive dorsiflexion of the toes reproduces his symptoms. He has no history of trauma or systemic inflammatory symptoms.
What is the most appropriate initial management for this patient?
Activity modification, calf and plantar fascia stretching, and orthotic shoe inserts.
The patient's presentation of morning heel pain and tenderness at the medial calcaneal tubercle is classic for plantar fasciitis, which is managed primarily with conservative measures.
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Etiology / Epidemiology
Common in runners, obese patients, and those with prolonged standing. Caused by repetitive microtrauma to the plantar fascia.
Clinical Manifestations
Classic start-up pain: heel pain with first steps in the morning or after prolonged rest. Pain improves with initial activity.
Diagnosis
Primarily a clinical diagnosis. Imaging is reserved for atypical cases; plain film radiographs may show a calcaneal spur.
Treatment
First-line: NSAIDs, ice, and stretching exercises. Avoid corticosteroid injections due to risk of fascia rupture.
Prognosis
90% of patients resolve with conservative management within 6-12 months. Chronic cases may require orthotics.
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Epidemiology & Etiology
Most common cause of heel pain in adults, peaking between ages 40-60. Primary risk factors include obesity, flat feet (pes planus), and sudden increases in activity intensity. Occupations requiring prolonged weight-bearing on hard surfaces are classic triggers.
Pertinent Anatomy
The plantar fascia is a thick, fibrous band of connective tissue originating at the medial calcaneal tubercle. It supports the longitudinal arch of the foot. Inflammation occurs primarily at the calcaneal insertion.
Pathophysiology
Repetitive strain leads to microtears and degenerative changes rather than true acute inflammation. This process is termed fasciosis. Chronic tension results in collagen breakdown and secondary thickening of the fascia.
Clinical Manifestations
Patients report sharp, stabbing pain localized to the medial heel. The hallmark is start-up pain, which is worst with the first steps after waking. Red flags include nocturnal pain, fever, or neurological deficits, which suggest tarsal tunnel syndrome or malignancy.
Diagnosis
Diagnosis is clinical based on history and physical exam. Tenderness is elicited by palpation of the medial calcaneal tubercle. Dorsiflexion of the toes while palpating the fascia exacerbates the pain. Radiographs are only indicated to rule out calcaneal stress fractures.
Treatment
Initial therapy includes NSAIDs, activity modification, and a dedicated stretching program for the Achilles tendon and plantar fascia. Orthotic shoe inserts or heel cups provide symptomatic relief. Corticosteroid injections should be used sparingly due to the risk of plantar fascia rupture and fat pad atrophy.
Prognosis
The condition is self-limiting but slow to heal. Conservative therapy is successful in the vast majority of patients. Failure to improve after 6-12 months may warrant referral for extracorporeal shockwave therapy or surgical release.
Differential Diagnosis
Tarsal tunnel syndrome: positive Tinel sign and paresthesias
Calcaneal stress fracture: point tenderness on calcaneal compression
Achilles tendinopathy: pain localized to the posterior heel
Fat pad atrophy: pain worsens with activity, not better
Spondyloarthropathy: associated with systemic symptoms like uveitis