Camptodactyly caused by an abnormal lumbrical muscle.
A thirteen-year-old girl, who complained of pain in the palm and difficulty in extension of the right little finger, had an abnormal insertion of the lumbrical muscle into the flexor digitorum superficialis tendon. The symptoms were relieved by detaching the lumbrical muscle and transferring its tendon into the lateral band.
D000293:Adolescent; D005260:Female; D005384:Finger Joint / Q000002:abnormalities* / Q000601:surgery; D006801:Humans; D009132:Muscles / Q000002:abnormalities* / Q000601:surgery