I. Functional training after partial functional reconstruction surgery. 1.Shoulder abduction functional reconstruction: Shoulder abduction cast fixation (please follow the surgeon’s instruction for the fixation time), active contraction of power muscle to complete the shoulder abduction movement after removing the cast, especially for children after shoulder abduction reconstruction and removal of the cast, the shoulder abduction movement should be performed 2000 times daily. If the child is unable to do so, the parents need to help Xie collaborate. 2. Functional reconstruction of the joints below the elbow: cast fixation (please follow the surgeon’s instruction for the duration of fixation), active contraction of the power muscles after removal of the cast or brace to complete the required reconstruction of the joint movements (e.g., if the ulnar carpal flexor is transferred to the extensor digitorum communis, daily wrist flexion is required, and if the brachioradialis is substituted for the radial flexor or radial extensor, daily elbow flexion training is required. The forearm is in the rotated neutral position during the elbow flexion training). Note: The reconstructed movement is different from the original movement, so you need to adapt to it to be able to use it freely. An important measure to prevent re-adhesion is early and effective functional exercise. 48h later, the active activities of full flexion and extension can be practiced. This is the time of local pain and swelling, and patients often lack courage and confidence due to severe pain during activities. The medical staff should explain patiently and encourage the patient to tolerate certain pain and insist on exercise in order to receive good treatment effect. If you wait for the reaction after the surgery to subside and the pain to reduce before you start exercising, the tendon will re-adhere early and the time to restore the function will be lost. The number of active exercises should not be too many within 2 to 4 d after surgery, but 2 times a day, with 2 to 3 flexions and extensions each time. 4 d later, the number and time of exercises can be gradually increased. At the same time of active exercises, cooperate with physical therapy, such as ultrashort wave, wax therapy, etc. (1) After flexor tendon surgery Practice extension and flexion activities, first passive activities once to maximize joint mobility, and then active activities. When practicing, first fix the metacarpophalangeal joint at 0°, then try to flex the interphalangeal joint to the maximum range, pause for a moment, and then actively straighten to the maximum. If you are unable to straighten actively, you can assist with passive straightening, pause for a moment, and then repeat once. When practicing 4 to 5 d after surgery, it is not necessary to fix the metacarpophalangeal joint, first flex the interphalangeal joint, then continue to flex the metacarpophalangeal joint to increase the range of motion of the tendon. (2) After extensor tendon release Exercise active extension to the maximum, pause for a moment, and then flex as much as possible. If flexion is not sufficient, assist passive flexion activities and then active extension. 4-5 d later gradually increase the number of activities. Note that when exercising, if passive assistance is needed, continuous steady force is required. Do not repeat violence.