Peroneal nerve palsy caused by a synovial cyst of the proximal tibiofibular joint: A case report

Abstract

Peroneal nerve entrapment is the most common entrapment found in the lower limb, even though nerve palsy caused by a synovial cyst of the proximal tibiofibular joint (PTFJ) is a very rare condition. We report the case of a 54-year-old man who developed sudden onset of an incomplete foot droop and therefore presented himself to the emergency room. Further examination showed a compression of the peroneal nerve provoked by a synovial cyst of the PTFJ. Treatment involved puncture of the cyst. The patient showed a complete and fast recovery. We discuss our case with regards to the recent literatures.

Keywords

Cyst of the proximal tibiofibular joint / Atraumatic peroneal nerve entrapment / Foot droop

ACKNOWLEDGEMENTS

We acknowledge the assistance of T. Betschart, MD of the Department of Radiology for his assistance in radiologic interpretation.

CONFLICTS OF INTEREST DISCLOSURE

The authors declare they have no conflicts of interest.

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