“…Separation of the superior femoral epiphysis is a rare but catastrophic complication [ 1 , 9 ] and has been reported to occur in 0.1 % to 2.3 % of children [ 1 , 10 ]. A transphyseal fracture should be suspected in adolescents with open physis and traumatic posterior hip dislocation since the risk of avascular necrosis of the femoral head increases if displaced (11).…”