If your arm suddenly hurts and you can’t lift it, you should go to the hospital to see what kind of cause it is, and then give targeted treatment. If the arm is fractured due to a traumatic injury, go to the hospital for an examination to check the severity of the fracture, and choose to give conservative treatment measures or surgical treatment measures. It may also be due to frozen shoulder, or rotator cuff injury, or tendonitis that causes arm pain, and activities may be restricted, etc. Local acupuncture and local massage, or needle knife release can be given to assist in the treatment, and can also be used in conjunction with the application of blood circulation, or anti-inflammatory and analgesic drugs to assist in the treatment.