A bent arm is usually due to adhesions at the elbow joint of the arm. If there is a fracture or soft tissue injury around the elbow joint, adhesions can develop over time with braking, and it is usually best to release the adhesions within three months. If this is not effective, it can take up to about six months. If the elbow joint is not completely loosened within six months, then the treatment will be very ineffective, and the main treatment is to carry out functional exercises for the elbow joint in the first six months, especially in the first three months. At the beginning of the cast or brace external fixation, it is fixed in a flexed state. With the release of the cast and the immobilization, the arm is straightened. When straightening, due to the adhesion in the process of loosening will appear very painful feeling, oral some non-steroidal anti-inflammatory painkillers to reduce the pain, and try to choose to carry out the functional exercise in the morning, because if placed in the afternoon or at night, due to the obvious local pain, affecting the sleep at night. When performing functional exercises, the duration, amplitude and strength of the exercises are gradual and progressive, with each day progressing from the previous day. Over time, gradually the elbow joint can be straightened. Before performing the exercise, it is best to use a warm water bag for hot compresses to increase blood circulation and promote the absorption of inflammatory metabolites. After the functional exercise is over, it is important to avoid getting cold, as cold will lead to slower blood circulation and further accumulation of inflammatory metabolites, leading to further aggravation of adhesions.