• Key idea: History of heel pain that is worst with first steps in morning and pain with passive dorsiflexion of toes is classic for plantar fasciitis; plantar fasciitis also commonly associated with bone spur on plantar surface of foot
• Differential for heel pain: (1) Plantar fasciitis (2) Bone infection or metastasis (constant pain that is worst at night) (3) Calcaneal stress fracture (worse with activity and palpation) (4) Tarsal tunnel syndrome (percussion tenderness and paresthesias over posterior tibial nerve in tarsal tunnel) (5) Achilles tendinopathy (pain/tenderness at posterior heel with palpable thickening of tendon that can be reproduced with foot dorsiflexion)

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