What Causes Elbows to Hurt When Straightening Your Arms?
1. Introduction Pain when straightening the arm is most commonly caused by posterior impingement, triceps tendinopathy, or early-stage osteoarthritis that mechanically restricts the full extension of the elbow joint. When the arm is extended, the bony tip of the ulna the olecranon must fit perfectly into a deep groove at the back of the humerus, … Read more