Figure 5
From: Hereditary sensory and autonomic neuropathies: types II, III, and IV
Charcot joints are demonstrated in this boy with HSAN IV or congenital insensitivity to pain with anhidrosis (CIPA). The left knee and left ankle are enlarged and distorted. The skin over the medial aspect of the ankle is darkened with a draining would secondary to superimposed osteomyelitis. There are other areas of trauma and ulcers including a site on the left heel.