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Automated preoperative planning system of total hip arthroplasty using anatomical femoral components

机译:使用解剖学股骨成分的总髋关节置换术自动化规划系统

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Introduction: In cementless total hip arthroplasty (THA), anatomical compatibility of each component with host bone is essential for stable fixation and good clinical results. Especially, fit and fill of the cementless femoral component in the femoral canal are important factors for component stability. Recently, CT-based interactive systems for preoperative 3D planning have been developed in order to quantitatively visualize the fit and fill [1]. However the interactive 3D planning is subjective as well as involves tedious and time-consuming tasks, which limit its clinical use. In order to solve these problems, we have been developing the automated preoperative planning system for THA, which automatically select optimal size, position, and orientation of the components of the implant system [2]. In our previous work, however, we have dealt only with a straight femoral component, whose interactive planning is relatively easy. In this paper, we develop and evaluate a method for automated planning of an anatomical femoral component, which has more complex shape than the straight femoral component to obtain better fit and fill in the distorted femoral canal. In this paper, the anatomical The purpose of this work is (1) to extend the automated stem planning so as to be applicable to more complex and clinically required task and (2) to obtain the insight of the design strategy of the evaluation function in automated planning for different types of the stem.
机译:介绍:在无硬髋髋关节关节术(THA)中,每个组分与宿主骨的解剖相容性对于稳定的固定和良好的临床结果至关重要。特别是,股骨管道中的硬质股骨部件的适合和填充是组分稳定性的重要因素。最近,已经开发了用于术前3D规划的基于CT的交互式系统,以定量可视化合身和填充[1]。然而,互动3D规划是主观的,也涉及乏味且耗时的任务,这限制了其临床使用。为了解决这些问题,我们一直在开发用于THA的自动化术前规划系统,它自动选择植入系统组件的最佳尺寸,位置和方向[2]。然而,在我们以前的工作中,我们只处理了一个直线股骨成分,其互动规划相对容易。在本文中,我们开发和评估了一种解剖股骨部件的自动规划方法,其具有比直线股骨成分更复杂的形状,以获得更好的合适并填充扭曲的股渠。在本文中,解释本工作的目的是(1)扩展自动化词干规划,以便适用于更复杂和临床所需的任务和(2)以获得评估功能的设计策略的见解用于不同类型的茎的自动规划。

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