There were 146 cases in conventional treatment group , including 60 males and 86 females with an average age of ( 80.00 + / - 7.06 ) years old ranging from 66 to 96 ; 50 cases were intertrochanteric fracture of femur , 96 cases were fracture of neck of femur ; Singh index > or = IV in 75 cases , < IV in 71 cases ; preoperative Harris score was 40.10 + / - 2.81 .