CPT® Code 29855

Arthroscopically aided treatment of tibial fracture, proximal (plateau); unicondylar, includes internal fixation, when performed (includes arthroscopy)

The CPT® Code 29855 refers to the arthroscopically aided treatment of a proximal tibial fracture, specifically a unicondylar fracture of the tibial plateau. This procedure involves the use of an arthroscope, a specialized instrument that allows for visualization and treatment of the joint through small incisions. The proximal tibia, which is the upper part of the shinbone, has two condyles—medial and lateral—that are crucial for knee joint function. Tibial plateau fractures occur at this proximal end and can extend into the articular cartilage, potentially affecting the knee joint's stability and movement. The treatment approach may vary based on the fracture's configuration, and the procedure is often referred to as a limited open technique. During the procedure, portal incisions are made to access the knee joint, allowing the surgeon to insert instruments and visualize the joint interior. The extent of the injury is assessed, and if feasible, the fracture is reduced using arthroscopic techniques. This may involve making a small incision for limited open reduction and applying internal fixation methods, such as screws or a buttress plate, to stabilize the fracture. The wound is then irrigated, and the incisions are closed, ensuring proper healing and recovery.