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Title: Median and ulnar nerve compression at the wrist caused by anomalous muscles
Authors: De Smet, Luc # ×
Issue Date: Dec-2002
Series Title: Acta Orthopaedica Belgica vol:68 issue:5 pages:431-8
Abstract: Compression of the median and ulnar nerves at the wrist is frequently encountered. Carpal tunnel syndrome usually occurs without any obvious extrinsic cause; several cases have however been reported caused by anomalous or hypertrophic muscles. A survey of the literature shows that compression neuropathy of the median nerve has been reported in relation with anomalies affecting three muscles: the first (or second) lumbrical, the palmaris longus and its anatomic variants and the superficial flexor of the index finger. In the ulnar tunnel the situation is thoroughly different: so-called idiopathic ulnar tunnel syndrome is rare and an extrinsic compressing structure can usually be disclosed. Anomalous muscles belong to the palmaris longus/abductor digiti minimi group; the flexor carpi ulnaris is sometimes involved. One can suspect the presence of such an anomalous muscle when the compression syndrome concerns a patient who is not within the "usual" age group with symptoms initiated or aggravated by physical exercise.
ISSN: 0001-6462
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Research Group for Musculoskeletal Rehabilitation
× corresponding author
# (joint) last author

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