CPT® Code 26497

The procedure described by CPT® Code 26497 involves the transfer of a tendon to restore intrinsic function specifically in the ring and small fingers. This condition, often referred to as claw hand or claw finger, arises from a loss of intrinsic muscle function, leading to an imbalance between the intrinsic and extrinsic muscles of the hand. The intrinsic muscles, which include the interosseous and lumbrical muscles, are crucial for the fine motor control and dexterity of the fingers. In this procedure, the flexor digitorum superficialis (FDS) tendon of the ring finger is utilized to enhance the intrinsic function of both the ring and little fingers. By transferring the FDS tendon, the procedure aims to alleviate the clawing appearance and improve the flexion at the metacarpophalangeal (MCP) joint, thereby restoring more normal hand function. The FDS tendon is carefully detached from its original insertion point on the ring finger and is then split longitudinally. One half of the tendon is routed dorsally through the first interosseous muscle, while the other half is directed volarly and tunneled to the lumbrical muscle. This surgical intervention is critical for patients suffering from significant functional impairment due to claw hand, providing them with improved hand mechanics and overall quality of life.