Fig. 1

a The lateral collateral ligament and extensor insertion were turned distally to expose the distal articular surface of the humerus. b After identifying the lateral collateral ligament complex of the elbow joint, a pendulum saw was utilized to perform an osteotomy on the lateral epicondyle of the humerus. c The distal humeral surface was exposed after the release of the lateral collateral ligament complex. d The elbow joint demonstrates partial flexion and inversion, with the medial axis resembling a rotational hinge axis. The anterior and lateral dislocation of the distal humerus without tension resulted in complete exposure of the distal articular surface