There are many causes of elbow pain, such as
trauma, sports with violent collisions, etc. can lead to injury to the bones or ligaments of the elbow joint, e.g. epicondylitis and medial humeral epicondylitis are sports injury disorders that often lead to chronic inflammation of the elbow joint
septic osteomyelitis and septic arthritis can lead to bone destruction and joint congestion and oedema, resulting in pain in the elbow joint
Tuberculosis of the elbow joint can lead to bone destruction.