Suggestion: But your specific functional rehabilitation exercise doesn't have to wait for 3 months. It is possible to do elbow flexion and extension in about a month. It's exactly the same as before, and it's all based on the time when the last film was taken to see your fracture completely healed.
The fracture has healed clinically, or external fixation has been taken out. Patients can do some light work within their power, so that all joints can be fully exercised. Under the protection of crutches, patients with lower limbs can gradually stop activities that are not conducive to fracture healing, such as abduction of lateral condylar neck fracture of humerus, adduction of humeral shaft fracture, rotation of shoulder joint, elbow extension of straight supracondylar fracture of humerus, elbow flexion and rotation of forearm fracture, etc.