Causes
Usually, it takes a large amount of energy to fracture the scapula; the force may be indirect but is more often direct. The scapula is fractured as the result of significant blunt trauma, as occurs in vehicle collisions. About three quarters of cases are caused by high-speed car and motorcycle collisions. Falls and blows to the shoulder area can also cause the injury. Crushing injuries (as may occur in railroad or forestry accidents) and sports injuries (as may occur in horseback riding, mountain biking, bmxing or skiing) can also fracture the scapula. Scapular fracture can result from electrical shocks and from seizures: muscles pulling in different directions contract powerfully at the same time. In cardiopulmonary resuscitation, the chest is compressed significantly; scapular fracture may occur as a complication of this technique.
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