Analysis of optimal range of socket orientations in total hip arthroplasty with use of computer-aided design simulation
Analysis of optimal range of socket orientations in total hip arthroplasty with use of computer-aided design simulation
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DOI：
10.1002/jor.1100160418
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发表时间：
1998-07-01
影响因子：
2.8
通讯作者：
Ohkuni, K
中科院分区：
文献类型：
--
作者：
Seki, M;Yuasa, N;Ohkuni, K
应用全髋关节置换术的三维计算机辅助设计模型，研究髋臼假体的前倾和外展以及股骨假体的前倾和内翻角度对无假体撞击时髋关节屈伸范围的影响。假体撞击定义为股骨假体颈部和髋臼假体边缘之间的撞击。为了获得大于90度的髋关节屈曲角度和大于30度的伸展角度而不撞击假体，最佳角度是髋臼假体前倾1度~30度，髋臼假体外展30度~50度，股骨假体前倾10度。当股骨假体外翻角度从7度减少到0度时，在髋臼假体方位和股骨假体前倾相同的条件下，允许的无撞击屈曲范围增加。髋臼假体的前倾角与腰椎前凸角和骶骨水平角之间存在显著的负相关。
A three-dimensional computer-aided design model of a total hip replacement was used to study the effects of anteversion and abduction of the acetabular component and anteversion and varus-valgus angulation of the femoral component on the range of hip flexion and extension that could be obtained without component impingement. Impingement of the component was defined as impingement between the neck of the femoral component and the edge of the acetabular component. To achieve an angle of hip flexion greater than 90 degrees and an extension angle greater than 30 degrees without component impingement, the optimal angulations were found to be between 1 and 30 degrees of anteversion and 30 and 50 degrees of abduction of the acetabular component, as well as 10 degrees of anteversion of the femoral component. When the valgus angulation of the femoral component was reduced from 7 to 0 degrees, the allowable range of flexion without impingement increased under the same conditions of acetabular-component orientation and femoral-component anteversion. Significant inverse correlations were found between the anteversion angle of the acetabular component and both the lumbar lordosis angle and the sacrohorizontal angle.