The radiological analysis of pes cavus deformity in Charcot Marie Tooth disease

Charcot Maric Tooth (CMT) is a progressive hereditary peripheral neuropathy . The most prevalent subtype is CMT-1A, wherein patients develop a characte ristic cavovarus deformity. We have reviewed a series of standing lateral f oot radiographs of patients with foot deformity due to CMT, and found that the hind foot of these patients is in dorsiflexion, not equinus, and that t he apparent equinus is due to plantar flexion of the forefoot on the midfoo t, and actually represents a cavus deformity.