The effect of acetabular cup orientations on limiting hip rotation
The effect of acetabular cup orientations on limiting hip rotation
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DOI：
10.1016/s0883-5403(99)90110-9
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发表时间：
1999-06-01
影响因子：
3.5
通讯作者：
DiCesare, PE
中科院分区：
文献类型：
--
作者：
Kummer, FJ;Shah, S;DiCesare, PE
髋臼杯的方向和唇垫的位置（如果存在）可以通过减少旋转过程中髋关节假体撞击引起的脱位来改善全髋关节置换术后的稳定性。为了确定这些髋臼杯参数如何影响脱位，在Sawbones半骨盆模型中确定了两种标准股骨部件的旋转范围和旋转量。允许最大旋转范围的参数为髋臼杯倾斜角在35度和45度之间，髋臼杯前倾在0度和10度之间。髋臼杯前倾角大于20度和髋臼杯倾斜角大于45度明显限制了内旋和外旋，特别是髋关节屈曲大于60度。除了髋关节屈曲和唇向上时，髋臼杯唇提升的位置不影响旋转量。尽管目前有一些器械可以帮助实现特定的髋臼杯位置，但髋关节股骨柄类型和方向是影响旋转范围的其他重要因素，必须予以考虑。
The orientation of the acetabular cup and position of lip augmentation (if present) may improve postoperative total hip replacement stability by decreasing dislocation caused by hip prosthesis impingement during rotation. To determine how these cup parameters affect dislocation, the range and amount of rotation for two standard femoral components was determined in a Sawbones hemipelvis model. The parameters that allowed for maximal range of rotation were a cup angle of inclination between 35 degrees and 45 degrees and cup anteversion between 0 degrees and 10 degrees. Cup anteversion angles greater than 20 degrees and cup angles of inclination greater than 45 degrees significantly limited internal and external rotation, particularly for hip flexion greater than 60 degrees. The position of the cup lip augmentation did not affect the amount of rotation except when the hip was flexed and the lip superiorly oriented. Although there are currently devices to facilitate a particular cup position, hip stem type and orientation are other important factors affecting range of rotation that must be considered.