After reset lost cast has been half a month hand can not bend twenty degrees, may be because of external fixation for a long time, resulting in joint adhesion. 1. The hand is a small joint, after fracture braking for a long time and lead to stiffness, limited movement, joint adhesion, the hand can not bend. 2. After this situation, you can soak your hand in warm water to promote blood circulation in the hand, relieve muscle spasm in the hand, joint stiffness, slowly exercise and then do hand activities, finger activities including flexion, straightening, to the finger and grasping, so that the elasticity of the tendons and ligaments to recover. After reset lost cast hand can not be bent, such as a period of time after exercise still can not be relieved, it is recommended to go to the hospital in a timely manner, under the guidance of the doctor to deal with.