Objective To study the application and the curative effect of compressed screw and sartorius bone flap in treating femoral neck fractures in youth or middle age. Methods From February 1996 to December 2004, 86 patients with femoral neck fracture were treated by open reduction compressed screw and sartorius bone flap, aging from 21 to 49 years. Fracture was caused by traffic accident in 35 cases, fall from height in 27 cases and fall in 24 cases. Accoding to Garden classification, 23 cases were type Ⅱ, 25 cases were type Ⅲ, and 15 cases were type Ⅳ. We analyzed fracture healing and evaluate function by observation of the postoperative X-ray films. Results Of the 86 patients, 62 were followed up 6 months to 7 years (2 years and 5 months on average). According to Weijie’s criterion for nonunion and necrosis offemoral head, nonunion occurred in 4 cases; the healing rate of fracture was 93.5%. In healed patients, necrosis of femoral head occurred in 7 cases (11.3%) after 3 years. The results of hip joint function evaluation were excellent in 44 cases, good in 8 cases, fair in 6 cases and poor in 4 cases; and the excellent and good rate was 83.9%. Conclusion Compressed screw and sartorius bone flap was simple and effective for femoral neck fractures in youth or middle age.