Peroneal Nerve Palsy Caused by Intraneural Ganglion: A Case Report

Abstract

　We report a case of peroneal nerve palsy caused by an intraneural ganglion. The patient was a 56-year-old female. She presented with pain in the lateral side of the left calf and weakness in the left foot. Upon exploration, an intraneural ganglion was found in the common peroneal nerve that was connected to the articular branch of the peroneal nerve from a proximal tibio-fibular joint ganglion cyst. The ganglion cyst of the proximal tibio-fibular joint was removed, including the articular branch. A longitudinal epineural incision was performed to decompress the peroneal nerve. Complete resection of the ganglion was not achieved because dissection between the ganglion and intact nerve was challenging, even with the use of a surgical microscope. The pain disappeared promptly after surgery. Neurological findings had returned to normal 8 months post-surgery, and no recurrence was observed after 13 months of follow-up.