Preliminary clinical observation of cannulated screw and fibular allograft fixation in treatment of femoral neck fractures in young and middle-aged patients

Objective To explore the preliminary efficacy of cannulated screw and fibular allograft fixation in the treatment of femoral neck fracture in the young and middle-aged patients. Methods 40cases of femoral neck fracture was treated by the fibular allograft implantation at the anterolateral site of the femoral head,and two cannulated screws were used for the internal fixation during the surgery. Results40 patients were followed up for 24 to 84 months with an average time of 48. 5 months. 15 patients had symptoms of osteonecrosis,and the advanced collapse occurred in five patients. The collapse rate was12. 5%. Three of the collapse cases underwent total hip arthroplasty( 7. 5%). According to the Harris score,the excellent and good rate was 92. 5%. Conclusion The cannulated screw and fibular allograft fixation in the treatment for the femoral neck fractures of the young and middle-aged patients has the following advantages:( 1) promoting healing,preventing nonunion and shortening of the femoral neck;( 2)improving the mechanical support of the subcondral bone in the weight-bearing area of the femoral head,so to disperse the local stress,provide effective head stability,and promote repairment of necrosis,which may prevent the collapse after the avascular necrosis of the femoral head;( 3) increasing the fixation stability and benefiting the early ambulation weight-bearing activities. The surgical method is simple,reliable and effective,especially suitable for the femoral neck fracture with bone defects.