Tendinopathy of the plantar fascia origin at the medial calcaneal tubercle causing first-step morning heel pain.
Also known as: plantar fasciitis, plantar fasciopathy, heel pain, plantar fasciosis
Overview
Degenerative tendinopathy of the plantar fascia at its origin on the medial calcaneal tubercle. Despite its name, the histopathology shows myxoid degeneration and fibroblastic disarray rather than acute inflammation ('fasciosis').
Epidemiology
Most common cause of heel pain in adults. Lifetime prevalence ~10%. Peak age 40-60; common in runners and people with prolonged standing occupations. Bilateral in ~30%.
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Question 1MusculoskeletalMedium
A 45-year-old recreational runner reports several weeks of inferior heel pain that is most severe with the first few steps in the morning and after periods of rest, then eases with continued walking. Examination reproduces the pain with palpation at the medial calcaneal tuberosity and with passive dorsiflexion of the toes. Strength and sensation in the foot are normal. Which of the following is the most likely diagnosis?
ACalcaneal stress fracture
BPlantar fasciitis
CHeel fat pad atrophy
DPlantar fascia rupture
Reveal answer & full explanation
Correct answer: B — Plantar fasciitis
ACalcaneal stress fracture
BPlantar fasciitis✓
CHeel fat pad atrophy
DPlantar fascia rupture
Why Plantar fasciitis is correct
Plantar fasciitis is the most common cause of inferior heel pain and classically produces sharp pain with the first steps in the morning and after rest that eases with activity
Point tenderness at the medial calcaneal tuberosity (the plantar fascia origin) and pain on passive toe dorsiflexion (windlass mechanism) localize the problem to the fascia
It is a clinical diagnosis; first-line care is plantar fascia and calf stretching, supportive or orthotic footwear, activity modification, and NSAIDs
Why the others are wrong
Calcaneal stress fracture — also seen in runners but causes pain that worsens through activity and weight-bearing with a positive calcaneal squeeze, not the classic first-step pattern with point tenderness at the fascia origin (premature closure on overuse in a runner)
Heel fat pad atrophy — produces deep aching pain under the central weight-bearing heel that worsens with prolonged standing on hard surfaces, with tenderness over the fat pad rather than the medial calcaneal tuberosity and no windlass response (confused-with-X: cushioning loss, not fascial traction)
Plantar fascia rupture — follows a sudden pop during push-off with acute swelling and plantar ecchymosis and loss of windlass tension, not a several-week course whose pain is reproduced by passive toe dorsiflexion (acute-on-chronic mimic)
Question 2MusculoskeletalMedium
A 48-year-old woman who works as a hairdresser presents with 6 weeks of sharp pain in her left heel. The pain is worst with her first steps in the morning and after sitting, then eases after a few minutes of walking but returns by the end of her shift. She has a BMI of 31. On examination there is point tenderness at the medial calcaneal tubercle, pain is reproduced with passive dorsiflexion of the toes, and ankle dorsiflexion is limited. The calcaneal squeeze test is negative. Which of the following is the most appropriate initial management?
APlantar fascia stretching and supportive footwear
BGastrocnemius recession and plantar fascia release
CUltrasound-guided corticosteroid injection to the heel
DExtracorporeal shockwave therapy to the fascia origin
Reveal answer & full explanation
Correct answer: A — Plantar fascia stretching and supportive footwear
APlantar fascia stretching and supportive footwear✓
BGastrocnemius recession and plantar fascia release
CUltrasound-guided corticosteroid injection to the heel
DExtracorporeal shockwave therapy to the fascia origin
Why Plantar fascia stretching and supportive footwear is correct
The vignette is classic plantar fasciitis: first-step morning heel pain that eases with walking, point tenderness at the medial calcaneal tubercle, a positive windlass test (pain on passive toe dorsiflexion), and a negative calcaneal squeeze (arguing against calcaneal stress fracture).
First-line management is conservative: patient education on the favorable natural history (most resolve within 6-12 months), activity modification, supportive cushioned footwear, and consistent plantar fascia plus eccentric gastrocnemius/Achilles stretching, which is the single most evidence-based intervention. Weight loss is also indicated given her obesity, the strongest modifiable risk factor.
Why the others are wrong
Ultrasound-guided corticosteroid injection to the heel is a second-line option that gives only short-term relief and carries risk of plantar fascia rupture and fat pad atrophy; it is not first-line for a newly presenting patient who has not tried conservative therapy.
Extracorporeal shockwave therapy to the fascia origin is reserved for chronic, refractory cases after months of failed conservative care, not for initial management.
Gastrocnemius recession and plantar fascia release is surgery, a last resort considered only after 6-12 months of failed conservative treatment, and it risks nerve injury and arch collapse.
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Repetitive microtrauma at the medial calcaneal tubercle from tensile loading of the plantar fascia during gait. Histologically, the lesion is degenerative with collagen disorganization, fibroblast proliferation, and neovascularization — analogous to other tendinopathies.
Clinical presentation
Symptoms
Sharp medial heel pain with the first steps in the morning or after prolonged sitting (post-static dyskinesia)
Pain improves after the first few minutes of walking but worsens with prolonged standing or activity
Insidious onset, often weeks to months
Worse on hard surfaces or in unsupportive footwear
Signs / physical exam
Point tenderness at the medial calcaneal tubercle (origin of plantar fascia)
Pain reproduced with passive dorsiflexion of the toes (windlass test)
Tight Achilles / limited ankle dorsiflexion common
Examine for pes planus or pes cavus
Calcaneal squeeze test typically negative (helps exclude calcaneal stress fracture)
Differential diagnosis
Calcaneal stress fracture — Pain with calcaneal squeeze, more diffuse heel pain; MRI bone edema; common in runners and military recruits
Tarsal tunnel syndrome — Numbness/burning of medial heel and sole; positive Tinel over posterior tibial nerve
Baxter nerve (first branch of lateral plantar nerve) entrapment — Sharp medial heel pain with weakness of fifth toe abduction; common in runners
Plantar fascia rupture — Sudden popping followed by bruising; usually after steroid injection or athletic injury
Sero-negative spondyloarthropathy (enthesitis) — Bilateral heel pain in a young patient, inflammatory features, HLA-B27
Fat pad atrophy — Diffuse heel pain in older adults, tenderness directly under the calcaneus
Achilles tendinopathy / insertional — Posterior heel pain, tender Achilles insertion or 2-6 cm proximal
Sever disease (calcaneal apophysitis) — Adolescent athletes; tenderness at posterior calcaneus
Diagnostic workup
Labs
Generally NOT indicated
Consider HLA-B27, ESR, CRP if young patient with bilateral disease and inflammatory features (suggesting enthesitis)
Imaging
Diagnosis is CLINICAL — imaging not routinely needed
Plain radiographs — heel spurs (incidental and unrelated to symptoms), exclude stress fracture
Ultrasound — thickened plantar fascia >4 mm with hypoechoic origin; useful when diagnosis uncertain
MRI — reserved for refractory cases, atypical presentations, suspected rupture, or alternative diagnoses
Diagnostic algorithm
Intervention
Evidence
Notes
Plantar fascia / calf stretching
Strong
First-line; eccentric calf protocol
Supportive footwear / orthotics
Moderate
Cushioned arch support
Night splints
Moderate
Helpful for refractory morning pain
NSAIDs (oral or topical)
Limited
Symptomatic only
Corticosteroid injection
Short-term benefit
Risk of rupture and fat pad atrophy — use sparingly
Patient education — natural history is favorable; most resolve within 6-12 months
Activity modification — reduce high-impact activity, alternate with cycling/swimming
Plantar fascia and Achilles stretching exercises (most evidence-based; eccentric calf stretching)
Supportive footwear with cushioning and arch support
Over-the-counter or custom orthotics
Night splints — hold ankle in dorsiflexion overnight; effective for refractory cases
NSAIDs — ibuprofen, naproxen, meloxicam — short course for pain (limited evidence for long-term benefit)
Ice massage, weight loss
Second-line / adjunct
Corticosteroid injection — short-term pain relief; carries risk of plantar fascia rupture and fat pad atrophy; ultrasound-guided injections reduce these risks
Extracorporeal shockwave therapy — modest evidence for chronic refractory cases
Platelet-rich plasma — emerging evidence for refractory tendinopathy
Physical therapy with manual treatment and gastrocnemius stretching
Walking boot for severe symptoms unresponsive to other measures
Gastrocnemius recession or plantar fascia release surgery — last resort after 6-12 months of failed conservative care
Complications
Persistent or recurrent pain
Plantar fascia rupture (sometimes after corticosteroid injection)
Fat pad atrophy from repeated steroid injections
Compensatory gait abnormalities, knee or back pain
Postoperative complications: persistent pain, nerve injury, arch collapse with overly aggressive plantar fascia release
PANCE pearls
First-step morning heel pain that improves with walking is essentially diagnostic.
Avoid repeated corticosteroid injections — they accelerate fat pad atrophy and risk fascia rupture.
Bilateral plantar fasciitis in a young patient warrants screening for spondyloarthropathy (enthesitis).
Heel spurs on X-ray are incidental — present in many asymptomatic adults and not a treatment target.
The single most effective intervention is consistent plantar fascia and gastrocnemius stretching; counsel patients on adherence over weeks to months.
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