The back of the elbow with repeated extension (straightening of the elbow) can impinge causing pain.
The elbow joint is a hinge joint, with the ulna moving into the lower end of the humerus, which prevents massive hyperextension of the joint. The bones at the back of the elbow can be repeatedly jammed resulting in inflammation of the joint lining (synovium), proceeding to injury to the cartilage and bone. Bone spurs may sometimes form leading to further injury and soft tissue impingement (pinching).
Impingement is caused by a repeatedly forced movement, in the case of a posterior impingement with forced hyper-extension (complete straightening of the arm). Classic individuals are athletes doing throwing sports (decelerating movements like throwing a ball) (Babhulkar, 2015).
Management involves rest, changes in daily routines/sports activities and exercises. Physiotherapy includes strengthening, flexibility training and movement modification; in severe and extremely painful situations local injections of steroids can be treatment of choice. Last option is a arthroscopy (keyhole surgery) (Babhulkar, 2015).
Babhulkar S., 2015, Elbow Injuries, The Health Science Publishes, New Delhi, India, p: 36