Isolated traumatic dislocation of the radial head is unusual and posterolateral dislocation is exceedingly rare. To our knowledge, only Stelling, F. H. and Heidt, R. S. reported isolated traumatic posterolateral dislocation of the radial head. Recently, we have surgically treated a patient with this disorder. A seven-year-old boy came to our hospital on January 11, 1984 complaining of pain in his left elbow. Upon examination, pain, local heat and swelling were observed in his left elbow. Radiographs showed isolated posterolateral dislocation of the radial head. The dislocation required open reduction, removal of interposition and repair of annular ligament.
