If you have difficulty in straightening your arm after a fracture, you can take the following methods to treat it: 1. actively do active or passive functional exercises of the joint, and passive functional exercises, it is best to go to the rehabilitation medicine department of the hospital and find a rehabilitation therapist to do joint loosening, the effect is the best. 2. you can apply local heat before the activity, or use the Chinese herbal medicine to fumigate or soak the joint area of the arm by boiling water. 3. You can also do some physical therapy, such as microwave therapy or ultrasonic therapy, to help loosen the adhesions. You can also go to the hospital to improve the examination, pay attention to braking, and pay proper attention to rehabilitation exercises, you can apply heat to the fracture area to prevent soft tissue adhesions, and pay attention to calcium supplementation.