Anterior dislocation of the elbow in a child with congenital posterior dislocation of the radial head. A case report.

A 9-year-old boy presented with anterior dislocation of the left elbow associated with a long-standing posterior dislocation of the radial head. Lack of full extension of the elbow joint was reported since birth. The dislocated elbow was reduced. No treatment was undertaken for the dislocated radial head. Radiographic evidence of dysplasia of the contralateral radial head provided a significant diagnostic criterion of a congenital malformation.