Objective To investigate the long term effect of the displacement of the greater trochanter with blood vessel inside fomur to treat avascular necrosis of youngsters′ femoral head.Methods Thirty seven cases were subjected to a serial follow up(average 6 years).Results The long term effects of the displacement of the greater trochanter to treat the patients with femoral neck fracture(Ⅲ and Ⅳ types) and the avascular necrosis of the femoral head were satisfactory.The postoperative effective rate was 100.0% and the satisfactory rate was 94.6% respectively.Conclusion It is an effective means that the displacement of the greater trochanter with vessel pedicle inside femour treats the patients with femoral neck fracture (Ⅲ and Ⅳ types) and the avascular necrosis of the femoral head.