To correct elbow hyperextension greater than 15 degrees, first of all, the causes of the hyperextension are clearly defined, and the methods of correction are different for different reasons, as follows: 1. supracondylar humerus fracture: the elbow hyperextension that occurs after the fracture has healed abnormally can generally be treated by surgical osteotomy to regain the fracture alignment and alignment of the distal humerus, which will alleviate and correct the hyperextension. 2. ligament and soft tissue laxity: If the elbow hyperextension is caused by the relative laxity of the ligaments and soft tissues throughout the body, this condition is a congenital variant and does not require special treatment. Even if the elbow hyperextension is greater than 15 degrees, it will not cause joint dysfunction, nor will it cause the occurrence of arthritis at a later stage, therefore, special treatment is not required.