A, Mild cavus deformity and clawing of toes in patient in whom no cause could be found. B, Calluses beneath metatarsal heads are most common symptom prompting orthopaedic consultation. C, Marked forefoot equinus and resulting dorsal prominence of tarsus in patient with residual poliomyelitis deformity. D, Forefoot is pronated in relation to hindfoot during weight bearing; note clawing of toes. E, Shortening of medial column of foot.