CPT® Code 26665

A carpometacarpal fracture dislocation of the thumb, commonly referred to as a Bennett fracture, is a specific type of injury that occurs at the base of the thumb. This injury is characterized by a fracture that involves the articular surface of the metacarpal bone, often leading to significant displacement of the fracture fragments. The treatment for this type of fracture typically involves an open reduction procedure, which allows for direct access to the fracture site to ensure proper alignment and stabilization of the bone fragments. During the procedure, an L-shaped incision is made over the skin and subcutaneous tissue of the thumb metacarpal, extending down to the thenar musculature. This approach enables the surgeon to reflect the thenar muscles off the subperiosteal tissue, providing clear visualization of the joint and the fracture site. The area is meticulously cleared of any debris to facilitate the reduction process. To achieve proper alignment, towel-clip forceps may be employed to reduce the fracture and temporarily maintain the alignment of the fragments. In some cases, temporary wire fixation may be utilized to secure the fracture fragments before the application of internal fixation, which is generally necessary for optimal stabilization. Internal fixation can be achieved using either K wires or mini-fragment screws, depending on the specific requirements of the fracture and the surgeon's preference.