In order to prevent joint deformity after amputation, we should pay attention to the following matters: keep the correct limb position of the residual limb: after thigh amputation, we should pay attention to straighten and level the residual limb and try to get close to the middle of the body. When lying on your back, you should be careful not to raise the residual limb for comfort or pain relief; After leg amputation, pay attention to put the knee joint of the residual limb in a straight position, and do not put a pillow under the thigh or knee, and do not bend the knee and lie on the bed. ? Training to maintain joint mobility: generally, after 1 week operation, the amputee can lie face down and let others help him to gently adduce and extend the residual limb; Two weeks after the operation, you can start to practice stretching the residual limb backwards, adducting or clamping objects on your stomach, and lifting the residual limb of the thigh and the healthy thigh. Each promotion should last as long as possible, and the continuous promotion time should be gradually extended. ? How to do systematic training after amputation: amputation has great influence on people's spirit and whole body, especially for the elderly or some people with injuries. Patients should pay attention to full-body exercise before prosthesis assembly. Exercise content should include:? Lie down. Lower limb amputees should start the strength training of both upper limbs as soon as possible: focus on the stretching strength of both elbow joints, and prepare to get out of bed as soon as possible and stand on crutches. ? Training amputees to stand and jump on one leg is beneficial to the coordination of muscle strength, the recovery of balance function and physical strength. You can stand on railings and walls with both hands, gradually transition to standing without holding things with your hands, and then transition to jumping on one foot. Upper limb amputees should strengthen the training of shoulder joint range of motion and muscle strength. ? If possible, you should actively participate in swimming activities (protected by balloons), which is helpful to the recovery of physical strength, cardiopulmonary function, joint range of motion and muscle strength.