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Oblique talus
2%
44/1988
Kohler's disease
37/1988
Charcot-Marie-Tooth
87%
1724/1988
Calcaneovalgus foot
6%
124/1988
Juvenile hallux valgus
49/1988
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Charcot-Marie-Tooth (CMT) disease is a hereditary motor sensory neuropathy. These patients often develop a pes cavovarus deformity (Illustration A) with the intial stage being plantar flexion of the 1st ray. A weakened tibialis anterior / peroneus brevis is overpowered by a stronger peroneus longus / posterior tibialis and results in a plantar flexed first metatarsal and pronated forefoot as described in the article by Mosca. Hindfoot varus deformity develops secondarily. As the deformities become more fixed, an equinus deformity can also develop. Coleman block testing as described in CORR from 1977 can help determine if the hindfoot varus deformity is fixed or flexible. Hindfoot flexibility is noted by placing the lateral foot on a block to remove the plantar flexed first ray from contributing to the deformity and observing the hindfoot moving to a more neutral position.
3.5
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