Dorr Lawrence D, Hishiki Yuji, Wan Zhinian, Newton Deanne, Yun Andrew
The Arthritis Institute, 501 E. Hardy Street, 3rd Floor, Inglewood, CA 90301, USA.
Iowa Orthop J. 2005;25:1-9.
The purpose of this study was to develop an imageless (without preoperative computerized tomography (CT) scans or intraoperative fluoroscopy) computer navigation system for total hip replacement. One-hundred and ninety-five hips were operated with imageless computer navigation. Eighty-five hips were operated prior to obtaining precise results, with precision refined in the subsequent 110 hips. Computer accuracy for cup-adjusted anteversion was achieved in 100% of the final 40 hips, and for adjusted inclination in 96.6%. The factors necessary for accurate measurements are mechanical stability of the tools with the light-emitting diodes, adjusted computer anteversion and inclination for the tilt of the pelvis (tilt in the AP plane), and check-and-balance techniques for confirmation of measurements of tilt, anteversion and inclination.
本研究的目的是开发一种用于全髋关节置换的无影像（无需术前计算机断层扫描（CT）或术中透视）计算机导航系统。195例髋关节采用无影像计算机导航进行手术。85例髋关节在获得精确结果之前进行了手术，随后的110例髋关节精度得到了提高。在最后40例髋关节中，髋臼调整前倾角的计算机精度达到100%，调整倾斜角的精度达到96.6%。精确测量所需的因素包括带有发光二极管的工具的机械稳定性、根据骨盆倾斜度（前后平面倾斜）调整计算机前倾角和倾斜角，以及用于确认倾斜、前倾角和倾斜角测量的制衡技术。
