CPT® Code 27428

The procedure described by CPT® Code 27428 refers to ligamentous reconstruction (augmentation) of the knee, specifically performed through an intra-articular approach using an open surgical technique. The knee joint is stabilized by four major ligaments: the anterior cruciate ligament (ACL), the posterior cruciate ligament (PCL), the medial collateral ligament (MCL), and the lateral collateral ligament (LCL). Among these, the ACL and PCL are critical for maintaining the stability of the knee during movement. The ACL is located centrally within the knee joint, connecting the femur (thigh bone) to the tibia (shin bone), while the PCL is situated behind the ACL, also connecting these two bones. Injuries to the MCL and LCL are less common and typically do not necessitate surgical intervention. When surgical reconstruction is required, it can be categorized into two types: extra-articular and intra-articular. Extra-articular reconstruction involves using structures outside the knee joint to provide additional support to the ACL and PCL, although such procedures are infrequently performed. In contrast, intra-articular reconstruction involves direct intervention within the joint capsule, allowing for a more precise repair of the damaged ligaments. The intra-articular approach for ACL reconstruction involves several critical steps, including the removal of the damaged ligament, inspection of the joint, and the use of graft material, such as the central third of the patellar tendon, to replace the ACL. This procedure is essential for restoring knee stability and function following ligament injuries, particularly in athletes and active individuals. The detailed steps of the procedure ensure that the reconstruction is performed accurately, promoting optimal recovery and rehabilitation outcomes for the patient.