The fracture of a dislocated humerus is so rare an accident that up to 1894 a most careful search had revealed only 117 cases, and the surgeon reporting this fact adds that no single observer has met more than five.1
The text-books2 take this subject up in a very limited manner.
This injury is usually caused by the patient having received a heavy blow upon the shoulder, or having fallen on the shoulder or on the outstretched hand or elbow. Rare as these accidents are, a recent authority3 (1906) says that they are more frequent and more important than fracture of the scapula, though the latter, as well as fracture of the clavicle, also occurs.
In treating dislocation complicated by fracture the dislocation should be reduced as soon as possible by one of several methods in use, the one generally employed being that described by Kocher in 1870,
McEWAN JS. DISLOCATION OF SHOULDER-JOINT COMPLICATED BY FRACTURE: WITH REPORT OF TWO CASES. JAMA. 1910;55(13):1104–1105. doi:10.1001/jama.1910.04330130040011
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