标题：Accuracy assessment for hip rotation centre in total knee replacement surgical navigation
作者：Huang, Xuemei ;Wei, Xiuting ;Wang, Chengtao
作者机构：[Huang, Xuemei ;Wei, Xiuting ] College of Mechanical Engineering, Shandong University of Technology, Zibo, Shandong, 255049, China;[Wang, Chengtao ] I 更多
会议名称：2nd International Conference on Bioinformatics and Biomedical Engineering, iCBBE 2008
会议日期：May 16, 2008 - May 18, 2008
来源：2nd International Conference on Bioinformatics and Biomedical Engineering, iCBBE 2008
摘要：For successful navigation during total knee replacement, it is elementary to determine the hip rotation centre accurately in order to adjust the geometrically correct position of a knee implant with respect to the mechanical leg axis. Current techniques rely on markers pinned on the moving distal femur, but there are no detail reports about the influence of the femoral moving range on accuracy of mechanic axis of femur. To accurately define the femoral mechanical axis, a novel research based on the reconstructing femoral CT image was put forward. Five moving ranges of femur were selected according to human's kinematics' characteristic and the optical tracking system defines the hip center and mechanical axis of femur accordingly. To know which moving range can get the more accurate hip center, CT machine scanned the femur and reconstructed its 3-D model; In UG software, we picked up the mechanical axis of reconstructed femur as the "accurate" axis. The paper compared five tracking defined axis with "accurate" axis, then the moving range which determine more accurate mechanical axis can be obtained. However, the experiments results also indicated that the tracking hip center prefers to medial, distal and posterior compared the accurate femoral head center. © 2008 IEEE.