The incision length was 6.0 ~ 10.5 ( average length 7.4 ) cm , average blood loss was 387.6 ( 140.0 ~ 1000.0 ) mL , average drainage was 143.1 ( 63.0 ~ 375.0 ) mL , average blood transfusion was 77.6 ( 0 ~ 400.0 ) mL , average operation time was 84.6 ( 63.0 ~ 130.0 ) min , and vitalock abduction angle imaging after the operation was 41.6 ( averagely 38.0 ~ 57.0 ) in Group A.