Ulnar nerve compression in Guyon's canal caused by a pseudotumor of the pisiform.

Acta Orthop Belg

Department of Orthopedic Surgery, Asturias Central Hospital, Oviedo, Spain.

Published: January 1996

A rare case of ulnar nerve compression at the wrist by a hypertrophic pisiform is reported. The patient was treated with pisiform bone excision, and this resulted in complete relief of symptoms with no functional deficit.

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