CPT® Code 26843

Arthrodesis of a carpometacarpal (CMC) joint other than the thumb is a surgical procedure aimed at fusing the joint to alleviate pain and restore stability. This procedure is commonly indicated for patients suffering from arthritis or instability in the CMC joint, which can lead to significant discomfort and functional impairment. During the surgery, an incision is made over the CMC joint to access the joint capsule. The surgeon carefully incises the joint capsule and inspects the joint surfaces for any damage or irregularities. The articular cartilage, which is the smooth tissue covering the ends of bones in the joint, is excised from both the metacarpal base and the carpal bone to prepare for fusion. The carpal bone is then smoothed and reshaped using a bur, ensuring it fits properly into the base of the metacarpal bone. To maintain the desired position of the CMC joint during the healing process, internal fixation devices such as pins or wires may be utilized. After the joint surfaces are adequately prepared and fixed, the soft tissues surrounding the joint are meticulously repaired in layers. Finally, a short arm cast is applied to immobilize the area and support the healing process, allowing for proper fusion of the joint over time.