CPT® Code 26850

Arthrodesis of a metacarpophalangeal (MCP) joint is a surgical procedure aimed at fusing the bones of the MCP joint, which is located between the metacarpal bone of the hand and the proximal phalanx of a finger. This procedure is typically indicated for patients suffering from conditions such as arthritis or instability of the MCP joint, which can lead to pain, decreased function, and impaired mobility. The surgery involves making an incision over the MCP joint to access the joint capsule, which is then incised to allow for inspection of the joint surfaces. During the procedure, the articular cartilage from both the metacarpal head and the phalanx is excised to prepare the surfaces for fusion. The metacarpal is then smoothed and reshaped using a bur, ensuring that it fits properly into the base of the phalanx bone. In some cases, internal fixation devices, such as pins or wires, may be utilized to maintain the desired position of the MCP joint until the bones have fused together. After the joint surfaces are prepared and any necessary fixation is applied, the soft tissues are meticulously repaired in layers, and a short arm cast is applied to support the hand during the healing process.