Dislocation of the head of the radius associated with fracture of the upper end of the ulna in children.

Traumatic dislocation of the head of the radius in children may be either an isolated injury or, more commonly, part of a more complex injury to the elbow, such as the Monteggia fracture-dislocation. in that injury the dislocation of the head of the radius is described as anterior or posterior and the fracture of the ulna affects its shaft (Watson-Jones 1956). Wise (1941) reported a case of lateral dislocation of the head of the radius associated with incomplete fracture ofthe olecranon which produced a varus deformity in a seven-year-old boy. He considered it “an unusual Monteggia fracture”. Hume (1957) reported three cases of anterior dislocation of the head of the radius associated with undisplaced fracture of the olecranon in children. He differentiated this type ofinjury from the known Monteggia fracturedislocation. Beddow and Corkery (1960) described two cases, and Wright (1963) added five new cases. The purpose of this paper is to describe five new cases of this injury which has received such little attention in the literature. The first three cases are more interesting because the injury to the elbow was associated with fracture of the lower end of the radius and ulna. We have not found this particular type of injury in the literature.