Personal observations on the role of the lumbrical muscles in carpal tunnel syndrome.

A case of carpal tunnel syndrome is presented in which an abnormally high origin of a lumbrical muscle seemed to be the cause. Since the patient and author are the same, the symptoms of compression and during the postoperative period are well documented. Evoking the symptoms by exercise or active motion is suggested for future diagnostic tests. A surgical incision more ulnarward is recommended.