CPT® Code 26641

Closed treatment of a carpometacarpal (CMC) dislocation of the thumb involves a non-surgical procedure aimed at realigning the bones at the base of the thumb where it meets the wrist. This type of dislocation is characterized by the displacement of the thumb's metacarpal bone from its normal position in the CMC joint. Such dislocations are uncommon, primarily due to the robust nature of the volar ligament, which provides significant stability to the joint. The procedure is performed without making any incisions, hence the term 'closed treatment.' It requires skilled manipulation to restore the thumb's normal anatomy. Prior to the manipulation, imaging studies, specifically radiographs, are obtained to assess the extent of the dislocation and to rule out any associated fractures. The manipulation technique typically involves applying traction to the thumb while simultaneously extending, pronating, and abducting the metacarpal to facilitate the reduction of the dislocation. Following the reduction, additional radiographs may be taken to ensure that the bones are properly aligned and that the joint is stable.