<s>[INST] I have a metal plate and screws on my humerus due to an accident 12 years ago. Lately, just above where the plate is and under my shoulder is sharp, clicking pain and I can t lift my arm up. It only happens when I move it the wrong way. Could it be that a screw is loose? [/INST] Hi, Thank you for providing the brief history of you. A thorough musculoskeletal assessment is advised along with X-ray. As the pain in sharp shooting in nature, and also you are not able to lift your hand during that time, it could be due to muscle weakness or any nerve impingement. After a thorough assessment the matter can be understood properly. Usually, with simple physical therapy if the implant is intact in situ, the majority of patients recovery. RegardsJay In Chat Doctor.  </s>