Non-traumatic dislocation of the radial head in cerebral palsy.

To our knowledge, there has been only one previous description of dislocation of the radial head associated with cerebral palsy. This paper describes nine such dislocations, eight of which were bilateral and posterior and one, unilateral and anterior. There was an incidence of this abnormality of 2.4 per cent in 368 of the cases surveyed. Of those patients with cerebral palsy and with flexion contracture of the elbow and pronation contracture of the forearm, 27 per cent had the dislocation.