• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Society for Computer Assisted Orthopaedic Surgery >Accuracy of a simplified leg length measurement algorithm in total hip arthroplasty
【24h】

Accuracy of a simplified leg length measurement algorithm in total hip arthroplasty

机译：总髋关节置换术中简化腿长测量算法的准确性

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Introduction: Leg length inequality is a major source of dysfunction and dissatisfaction following total hip arthroplastyl-4. The difficulty in accurately measuring changes in leg length during surgery is the primary obstacle in accurately achieving surgical objectives. Small changes in adduction/ abduction, flexion/extension, or internal/external rotation between pre- and post-reconstruction measurements can lead to significant errors in assessing leg length changes during surgery and can lead the surgeon to make poor decisions based on this inaccurate information. Two prior computer-assisted methods of measuring leg-length change during surgery have had significant problems. The first common method is to use only a pelvic reference frame and to digitize a landmark on the femur before and after reconstruction. This method has the disadvantage that measurements can be just as inaccurate as mechanical methods because any difference in positioning of the leg between the pre- and post- reconstruction assessments will lead to large errors. The second method is to establish coordinate systems for both the pelvis and the femur to allow for more accurate measurement. Two problems encountered when using this method are first, that an accurate calculation of the center of rotation of the hip is often impossible due to arthritis, and second , establishing a femoral coordinate system is time-consuming.
机译：介绍：腿长不等式是功能障碍的主要来源和总髋关节缩缩氧化棒-4后的不满。在手术期间准确测量腿部长度变化的困难是准确实现外科目标的主要障碍。内收集/绑架，屈曲/延伸或内部重建测量之间的内部/外部旋转的小变化可能导致在手术过程中评估腿长变化的显着误差，并且可以引导外科医生基于这种不准确的信息来做出差的决策。在手术期间测量腿部长度变化的两种先前的计算机辅助方法存在重大问题。第一种常见方法是仅使用盆腔参考框架，并在重建之前和之后向股骨上的标志性数字化。该方法的缺点是测量可以与机械方法一样不准确，因为重建后和重建后的腿部定位的任何差异会导致大错误。第二种方法是建立骨盆和股骨的坐标系，以允许更准确的测量。首先，使用这种方法时遇到的两个问题是，由于关节炎，髋髋旋转中心的精确计算通常是不可能的，而第二，建立股骨坐标系是耗时的。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号