CPT® Code 24546

Open treatment of humeral supracondylar or transcondylar fracture, includes internal fixation, when performed; with intercondylar extension

An open treatment of a humeral supracondylar or transcondylar fracture involves a surgical procedure aimed at correcting fractures located in the distal humerus, specifically above or through the epicondyles. The distal humerus features two prominent bony projections known as the lateral epicondyle and the medial epicondyle. When a fracture occurs just above these epicondyles, it is classified as a supracondylar fracture, whereas a fracture that traverses through the epicondyles is termed a transcondylar fracture. These fractures can extend into the intercondylar region, which includes critical areas such as the trochlea and the olecranon fossa. The trochlea serves as a pulley-like structure that articulates with the ulna, while the olecranon fossa is a posterior depression in the distal humerus that accommodates the olecranon of the ulna during elbow movement. The surgical approach for repairing these fractures typically involves an olecranon osteotomy, where an incision is made over the elbow to access the fractured area. During the procedure, the ulnar nerve is carefully released from the cubital tunnel to prevent nerve damage. The olecranon is then isolated, and a small incision is made into the joint capsule to facilitate access to the fractured surfaces. A probe is utilized to identify the coronoid process, and an osteotomy cut is made just proximal to this structure. The olecranon, along with the intact triceps insertion, is reflected posteriorly, allowing for direct access to the supracondylar and transcondylar joint surfaces. The surgical team then reconstructs the articular surface and secures the fracture fragments to the humeral shaft, employing internal fixation methods such as pins or screws as necessary. This comprehensive approach ensures that the fracture is properly aligned and stabilized, promoting optimal healing and function of the elbow joint.