Feeling that the arm is not straight after radius surgery may be caused by muscle atrophy, soft tissue adhesion, nerve damage, etc. Rehabilitation training, medication and surgery can be used as prescribed by the doctor. 1. Muscle atrophy: After radial surgery, patients can’t move, muscle atrophy occurs, joint stiffness, and thus the arm can’t be straightened. Patients need to carry out postoperative rehabilitation training, active exercise will gradually restore arm function. 2. Soft tissue adhesion: After radius surgery, if inflammation occurs in the soft tissues at the injury site, soft tissue adhesion will occur, and the phenomenon of unstraightened arm may occur. If the symptoms are mild, patients can take anti-inflammatory drugs such as amoxicillin under the guidance of the doctor for treatment. If the adhesion is serious, the doctor can perform soft tissue release surgery. 3. Nerve damage: If the nerve is damaged during radial surgery, the patient may not be able to straighten the arm. Vitamin B1 can be taken under the guidance of the doctor for relief. If the symptom is serious, it can be operated by professional doctors. At the same time, patients need to actively train for rehabilitation. When the patient has the phenomenon of not straightening the arm after radial surgery, it is recommended to consult a doctor in time, to be diagnosed by a professional doctor, and to give reasonable treatment.