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.