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Rehabilitation Practice and Science

Translated Title

雙側旋前肌症候群：病例報告

Abstract

Pronator syndrome as a compression of median nerve at proximal forearm level is uncommon in all entrapment neuropathies. Only one case with bilateral pronator syndrome has been reported in the literature. A 51 year-old female suffered from numbness over bilateral hands for years, then she received neurolysis of median nerves at wrist level under the impression of bilateral carpal tunnel syndrome. Four months after operation, she still suffered from grip weakness and numbness over forearms and bilateral radial 3 and half fingers. Electrophysiological examination in our clinic showed non-pick up for stimulating sensory and motor nerve of right median nerve and sensory nerve of left median nerve. Besides, prolonged latency and decreased amplitude of left median motor nerve were noted although conduction velocity was normal. Also, denervation sign were found over bilateral abductor pollicis brevis, flexor pollicis longus, flexor digitorum superficialis and pronator teres . The polyphasic wave with decreased interference pattern over bilateral abductor pollicis brevis, flexor digitorum superficialis and pronator teres were also noted. According to history, physical examination and electrophsiological study, she was diagnosed as bilateral pronator syndrome. She received surgical intervention and compression of a fibrotic band over median nerve was found. After neurolysis and decompression were performed, significant improvement of weakness and numbness of left radial 3 and half fingers was noted at follow up. Repeated trauma resulting from heavy work , inducing fibrotic compression over median nerve, may be the possible cause in this case.

Language

Traditional Chinese

First Page

61

Last Page

66

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