Application value of hollow screw combined with allogeneic fibula internal fixation in the treatment of femoral neck fracture
Objective To observe and analyze the application value of hollow screw combined with allogeneic fibula internal fixation in the treatment of femoral neck fractures,aiming to provide a safer and more effective method for clinical treatment of femoral neck fractures.Methods A healthy Chinese adult male volunteer with normal physiological anatomy was selected.X-ray examination confirmed normal hip joint development.Three-dimensional models of femoral neck fractures fixed by hollow screws combined with allograft fibula and models of articular cartilage,ligaments,and muscles were constructed using three-dimensional reconstruction techniques.Mechanical analysis was performed to evaluate the biomechanical stability of the two internal fixation methods.Results The maximum stress occurred at the top of the femoral head cortex in femoral neck fractures fixed with multiple hollow screws and also when combined with allograft fibula.There was no significant difference in maximum stress between the two methods.In both fixation methods,displacement of the femoral head and neck decreases from the upper to the lower margin.The maximum displacement occurs at the external upper margin due to the highest tension,with no significant difference between the two methods.The maximum stress on the bone tissue of femoral neck fractures was observed in the cortical bone for both fibular allograft fixation with hollow screws and multiple hollow screw fixation.The maximum stress of interosseous fixation for femoral neck fractures with hollow screws combined with allograft fibula and multiple hollow screws was at the fracture's broken end and the fixed tail.Although there was no significant difference in the position of maximum stress distribution,the maximum stress values in bone tissue and internal fixation for allograft fibula fixation combined with hollow screws were smaller than those for multiple hollow screw fixation.Conclusions For patients with femoral neck fractures,the mechanical stability of allograft fibular internal fixation with hollow screws is comparable to that of multiple hollow screws.Both methods can provide a stable mechanical environment for fracture healing and effectively prevent femoral head necrosis and collapse,making them ideal treatments for femoral neck fractures.
Femoral neck fractureFemur head necrosisFinite element analysisBone nailsAllografts
万方数据
维普
