Anomalous muscles and ulnar nerve compression at the wrist.
D000328:Adult; D006801:Humans; D008297:Male; D008875:Middle Aged; D009132:Muscles / Q000002:abnormalities* / Q000601:surgery; D009408:Nerve Compression Syndromes / Q000601:surgery*; D014459:Ulnar Nerve / Q000601:surgery