OBJECTIVE: To determine the sensitivity and specificity of superficial peroneal nerve (SPN)/peroneus brevis muscle (PBM) biopsy in a cohort of patients with suspected peripheral nerve vasculitis.

Several nerves can be biopsied but the major requirement for selection of a nerve for biopsy is that it should be a purely sensory nerve ... sent to the laboratory for processing. The superficial ...

Electrophysiological studies revealed an absent left superficial peroneal sensory potential ... were consistent with a partial sciatic nerve injury, most likely secondary to the injections.