Humeral shaft fracture

Causes

Fractures to the humeral shaft are mostly caused by trauma with only a small percentage due to underlying conditions that weaken the bone density (osteoporosis, cancer, Paget's disease). This type of fractures is common among middle-aged and elderly people, mostly women, due to low energy falls. More commonly in younger males, humerus fractures often result from high-energy impact injuries with direct trauma to the arm and torsion of the upper extremity. They often coexist with a shoulder dislocation. In this young population humerus shaft fractures are caused by road traffic accidents and sport injuries.