Fig. 4From: The clinical and radiographic characteristics of avascular necrosis after pediatric femoral neck fracture: a systematic review and retrospective study of 115 patientsThe anteroposterior radiographs of Ratliff type I avascular necrosis after pediatric femoral neck fracture. Femoral neck fracture occurred at age of 14 years (a) and avascular necrosis was diagnosed 16 months later (b), type C2 according JIC classification, presenting severe femoral head and hip subluxationBack to article page