Acute carpal tunnel syndrome produced by anomalous flexor digitorum superficialis indicis muscle.
A 23 year old female nurse developed acute sensory symptoms of median nerve compression. Early exploration revealed abnormal flexor superficialis indicis muscle as the compressing structure. Symptoms were relieved by freeing the muscle from the nerve.
D000328:Adult; D002349:Carpal Tunnel Syndrome / Q000209:etiology*; D005260:Female; D006225:Hand; D006801:Humans; D009132:Muscles / Q000002:abnormalities*