Displaced fractures of the neck of the radius in children.

Age-Although their ages ranged from five to thirteen years (average ten years), twenty-six of the children were aged nine years or older. Sex-There were eighteen boys and sixteen girls. Site of fracture-In seventeen cases the fracture was three to four millimetres distal to the epiphysial plate, representing a true fracture of the neck of the radius (Fig. 1). In seventeen cases the injury was a Type II fracture-separation of the proximal radial epiphysis (Salter and Harris 1963) (Fig. 2). Displacement-This was measured as the alteration from the horizontal of the superior articular surface of the head of the radius. In three cases displacement was minor (15-29