颈干角和前倾角变化对髋关节应力分布影响

Effects of femoral neck angle and anteversion on stress distribution in hip joint

本文建立了不同颈干角和前倾角的置换后有骨盆髋关节模型,通过数值模拟分析了颈干角和前倾角的变化对置换后髋关节各部分应力分布规律的影响.通过对不同颈干角和前倾角的髋关节模型进行数值模拟,发现随着髋关节模型颈干角和前倾角的改变,股骨和假体柄上的最大应力值及位置也会随之改变且呈现一定的规律性,说明颈干角和前倾角也是影响髋关节应力分布及应力值大小的重要因素.

The models of hip joint after replacement established with pelvic and different femoral neck angles and anteversions were to analyze the laws of stress distribution by numerical simulation. It could be found that with the femoral neck angle and anteversion changes,the maximum stress value and position on the femur and prosthesis changed as well and show regularity. It demonstrated that the femoral neck angle and anteversion are also important factors to the stress value and stress distribution on the hip joint.