There are several common reasons for limited joint movement: 1. There may be some bony obstruction inside the joint. This is often seen when the patient has some serious injuries to the joints, such as the presence of joint dislocation or fracture within the joints. In this case, there may be a series of bony obstructions inside the joint, which may limit joint movement. 2. This condition may be caused by adhesions within the joint. This kind of lesion is often seen in patients with joint-related injuries, and in the process of recovery, did not carry out the corresponding functional exercise, which led to a series of adhesive tissues within the joints, which in turn led to a decrease in joint mobility. 3, this kind of situation may be due to the contracture of the joints. This kind of situation is often seen in the patient there are some limbs of serious ischemia or some limbs of the soft tissue of serious injury, such as burns and so on. This will lead to contracture of the joints, and the joint movement is limited. 4, this situation may be caused by severe pain. For example, due to the trauma of the joint area or some of the surrounding nerves are stimulated, which leads to severe pain here. At this time, in order to protect themselves, the patient will reflexively do not move the joint, which over time will result in limited mobility.