Arm injury refers to tendon and ligament injury around the shoulder joint, there is no quick recovery method, according to the degree of tendon and ligament injury, targeted treatment, often divided into conservative treatment and surgical treatment. 1. Conservative treatment: For mild tendon and ligament injuries, if the shoulder joint is still movable, you can take proper rest, use triangular towel to hang the affected side of the limb, and take non-steroidal anti-inflammatory drugs such as diclofenac sodium delayed-release tablets orally to reduce inflammation and relieve pain. 2. Surgery: If conservative treatment is ineffective and the tendon or ligament is completely ruptured, surgery should be considered to rebuild the damaged ligament. If the symptoms such as shoulder pain and limitation of activity persist without relief, it is recommended to consult the doctor in time, improve the relevant examination and treatment under the doctor’s guidance. The use of the above medications should be in accordance with medical advice.