CPT® Code 26494

Opponensplasty is a surgical procedure aimed at restoring thumb abduction, particularly in patients who have experienced median nerve damage. This condition often results in a loss of function in the thumb, which is critical for grasping and pinching movements. The procedure involves various techniques, one of which includes the transfer of the hypothenar muscles, a group of three muscles located in the palm that primarily control the motion of the little finger. These muscles include the abductor digiti minimi, the flexor digiti minimi, and the opponens digiti minimi. By mobilizing and transferring these muscles to the thumb's muscles and tendons, the surgeon aims to re-establish the ability to abduct the thumb effectively. Other techniques for opponensplasty may involve the transfer of different tendons, such as the palmaris longus or superficialis tendon, each with its specific procedural steps and anatomical considerations. The choice of technique depends on the individual patient's condition and the extent of nerve damage, with the ultimate goal of improving hand function and quality of life.