Korean J Sports Med.  2020 Dec;38(4):234-237. 10.5763/kjsm.2020.38.4.234.

Compressive Neuropathy of the Deep Motor Branch of the Ulnar Nerve in Amateur Cyclist

Affiliations
  • 1Department of Orthopaedics, Korea University Anam Hospital, Seoul, Korea
  • 2Department of Orthopaedics, Korea University Guro Hospital, Seoul, Korea

Abstract

A 36-year-old female amateur cyclist developed mononeuropathy of the deep branch of the ulnar nerve due to nerve compression adjacent to the ulnar tunnel (type II Guyon’s canal syndrome) caused by prolonged bicycle riding. The patient’s signs and symptoms persisted even after refraining from cycling for 4 weeks; thus, she underwent decompression of the deep branch of the ulnar nerve in the palm and wrist. Three months postoperation, she recovered nearly full power and function of her left hand.

Keyword

Cyclist palsy; Motor branch of ulnar nerve; Type II Guyon’s canal syndrome
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