Many fracture patients often have the trouble that after the fracture is healed, the joint is not as flexible as before, or the joint cannot move. In fact, this is a common complication of fracture – joint contracture, which greatly reduces the mobility of the affected limb and seriously affects the function of the affected limb, and is a major cause of disability for patients. As we know, the joint is like a hinge, and joint movement requires the flexible movement of this “hinge”. The joint capsule and ligaments are attached to this “hinge”, which not only firmly protects this “hinge” from being dislodged from its normal position, but also does not affect the movement of this “hinge”. “The joint capsule and ligaments are attached to this hinge, which not only protects the hinge from coming out of its normal position, but also does not affect the movement of the hinge. Different muscles are attached to this “hinge” by tendons, pulling it to move, so that our joints can move flexibly and freely under the control of the brain. Why do joints contract after a fracture? First of all, the fracture of the joint will cause the joint surface to be uneven and the joint to be inactive for a long time, which will cause the cartilage in the joint to become thin and less elastic and cause pain when moving. Second, tears in the joint capsule and ligaments form large scars after healing, which can thicken and shorten after long periods of inactivity, and the joint capsule adheres to the bones and tendons of the joint, further affecting the movement of the joint. In addition, prolonged immobilization degenerates the muscles and reduces the muscle fibers, while the increase in fibrous tissue makes the muscles less mobile and painful when moving. The combination of these causes makes the joint less mobile, or even immobile. What are the treatment options for joint contracture? We know that normal joint capsule, ligament and tendon tissues not only have sufficient fastness, but also must have a certain degree of elasticity, too tight, the joint will not be able to move flexibly, while too loose, the joint will be loose and unstable. Conventional conservative treatment, the degree of stretching is limited and patients are more painful, often not well adhered to, and surgical treatment, although it can be adjusted to the appropriate degree of elasticity, not only to endure the pain of a knife, and, after surgery, there are still adhesions, contracture may, and surgery is at the expense of muscle contraction to achieve tendon and other lengthening. At present, we use batch of small needle knife tendon, joint capsule release, with the external application of Chinese medicine, joint loosening training, etc. to promote the tendon, joint capsule softening, the effect is obvious. Specifically, after examination, the site of contracture is clearly identified, the site and scope of release is selected, and 3-5 days is a cycle with batch lengthening. In this way, the elasticity of joint capsule and tendon is restored, and a certain tension of joint capsule and tendon is ensured, so that the original stiff and inactive joint is restored to its usual vitality.