When a bone breaks or cracks, the injury is called a fracture. In the arm, a fracture most often occurs in the long and slender midsection (shaft) of one of the three arm bones (the humerus, radius and ulna).
Fractures of the humerus (upper arm bone) In otherwise healthy people, most fractures of the humerus are caused by a direct blow to the upper arm. This often is caused by a motor vehicle accident or high-impact fall. Less often, the humerus can fracture because of a severe...Read more