Intraneural Ganglion cyst of The Deep Peroneal Nerve Causing Rapidly Progressive Foot Drop

Abstract

Victor Quach, Jared Hanson, Joseph Chavarria and Bennie G Lindeque

Intraneural ganglion cysts are a relatively uncommon cause of peroneal nerve palsy. Patient’s typically present with weakness or absent ankle dorsiflexion, knee or leg pain, and paresethesia. Surgical decompression is widely accepted as the first line treatment for intraneural ganglion cysts of the peroneal nerve, with earlier intervention associated with better functional outcomes. Here, we describe the case of a 57-year-old male found to have a intraneural ganglion cyst of the peroneal nerve, three months after the onset of symptoms, including eventual complete foot drop. He underwent surgical decompression of the cyst. The intraneural ganglion cyst was found to be intricately involved with the nerve fibers, and the patient still does not have the ability to dorsiflex the affected ankle one month post-operation.

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