Why does my elbow ache when it is bent?

The elbow is a complex joint where bones, muscles, tendons, and ligaments work together. When you bend your elbow, these parts move and help your arm work. Sometimes, when one of these parts is strained or injured, it may develop pain. Tennis elbow, as described in one research study, happens due to overuse, which can cause tiny tears in the tendon that attaches your muscles to your bone. In another situation, if the ulnar nerve is compressed during flexion, it can cause pain and tingling. It is important to rest the elbow, avoid activities that worsen the pain, and seek a healthcare provider’s advice if the pain continues. These steps help manage inflammation and improve healing over time.