"Ape hand" deformity

In the late stage of peroneal muscle atrophy, interosseous muscles appear in the hands, and the large and small fish muscles atrophy, forming ape hand deformities. Peroneal myoatrophy, also known as Charcot-Marie-Tooth disease (CMT), is a group of the most common familial peripheral neuropathy, accounting for about 90% of all hereditary neuropathies. The common characteristics of this group of diseases are the onset of children or adolescents, chronic progressive peroneal muscle atrophy, symptoms and signs are relatively symmetrical, and most patients have family history. Because fibular muscle atrophy is the main clinical feature, it is also called peroneal myoatrophy. According to neuroelectrophysiology and neuropathology, CMT is divided into type Ⅰ and type Ⅱ, type CMT Ⅰ is called hypertrophic type, and type CMT Ⅱ is called neuronal type.

The material in this site is intended to be of general informational use and is not intended to constitute medical advice, probable diagnosis, or recommended treatments.