Many THA simulation models rely on a limited set of preoperative static radiographs to replicate sagittal pelvic tilt during functional positions and to recommend an implant orientation that minimizes the risk of prosthetic impingement. However, possible random changes in pelvic or lower extremity angular motions and the effect of coronal and axial pelvic tilt are not included in these preoperative models.

中文翻译：

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骨盆倾斜和下肢的微小随机角度变化可能会导致基于静态图像的术前髋关节置换术计划的错误：计算机建模研究。

许多 THA 模拟模型依赖于一组有限的术前静态 X 光片来复制功能位置期间的矢状骨盆倾斜，并推荐可最大限度降低假体撞击风险的植入物方向。然而，这些术前模型中不包括骨盆或下肢角运动可能的随机变化以及骨盆冠状和轴向倾斜的影响。