Of 110 elbow dislocations seen during a 15-year period at the Mayo Clinic, two were anterior and 108 were varieties of posterior dislocations. Dislocation commonly resulted in rupture of the collateral ligament attachments and in late slight heterotopic bone formation in the collateral ligaments. Avulsions of the epicondyles and fracture of the radial head were common accessory fractures. Avulsion of the medical epicondylar epiphysis is frequent and may predispose the joint to further injury. Injury to the ulnar nerve was approximately three times more common than was injury to the median nerve. Arterial injuries were noted in six dislocations and were always associated with persistent neurological findings. The late results were largely dictated by the severity of the original injury. The outlook in uncomplicated dislocations is good.
Linscheid RL, Wheeler DK. Elbow Dislocations. JAMA. 1965;194(11):1171–1176. doi:10.1001/jama.1965.03090240005001
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