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An X-linked form of Charcot-Marie-Tooth syndrome (sensory and motor neuropathy with atrophy of the peroneal muscle advancing to involve other distal muscles of the leg and arm). The affected males develop dropfoot or stoppage gait at the end of the first decade of life, followed by pes cavus, weakness and atrophy of the tibialis anterior, peroneal, and intrinsic muscles of the hands, areflexia, ulnar nerve enlargement, and moderate sensory loss of the limbs. Some patients are mentally retarded. Carrier females usually do not show any sign of disease.
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