Some patients with long term post-operative limitation of motion in the joint are in pain every time they perform range of motion exercises, and the shouting that tears the heart and lungs makes even the health care providers feel sorry for them. Manual therapy involves pulling on soft tissues and tearing away adhesions, and in many cases there is unavoidable pain. However, some pain can really be dealt with, especially for some patients who are sensitized to pain in spinal cord segments due to long-term painful stimulation. By desensitizing the corresponding segments, the pain can be effectively reduced, and the corresponding dermatomes and muscle segments can be relaxed, and the increase in joint movement angle can have an immediate effect.