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Mechanical-arm navigation system for acetabular cup orientation

机译：髋臼杯定位机械臂导航系统

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Introduction: Dislocation following total hip arthroplasty is a major complication, occurring in up to 10% of the cases and many studies suggest that improper acetabular cup orientation is a major factor affecting impingement and dislocation. Even though right preoperative decision about the positions and orientation of the prepared artificial joint is important for the successful outcome [1,2,3,4], the intra-operative positioning of the cup is more critical because of the difficulty in identifying the pelvic orientation. Several surgical methods and devices have been suggested to secure accurate orientation of acetabular component intra-operatively. Recently, navigation systems using computer and optical measurement devices have been commercialized. But these commercialized navigation systems require a CT-scan before surgery and/ or an expensive optical measurement devices, which cause extra cost and time. In this paper, a mechanical-arm based navigation system which requires less cost and effort is proposed for assisting placement of the acetabular component in THA.
机译：介绍：髋关节关节置换术后的脱位是一个主要的并发症，在案例的高达10％中发生了一系列，许多研究表明，髋臼杯取向不当是影响冲击和错位的主要因素。尽管对准备的人工关节的位置和取向的正确术前决定对于成功的结果是重要的[1,2,3,4]，但杯子的术语定位是更关键的，因为难以识别骨盆方向。已经提出了几种外科手术方法和装置，以确保可操作地确保髋臼部件的精确定向。最近，使用计算机和光学测量设备的导航系统已被商业化。但这些商业化导航系统需要在手术前和/或昂贵的光学测量装置之前进行CT扫描，这导致额外的成本和时间。在本文中，提出了一种基于机械臂的导航系统，其需要较低的成本和努力，以帮助放置髋臼部件在THA中。

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