Schnurr C, Michael J W P, Eysel P, König D P
Rheinische Klinik für Orthopädie, Viersen, Germany.
Int Orthop. 2009 Apr;33(2):365-72. doi: 10.1007/s00264-007-0494-7. Epub 2007 Dec 22.
Surface arthroplasty of the hip is increasingly popular. Optimising the position of the femoral component is essential to avoid early implant failures such as femoral neck fractures. Sixty hip surface replacements were retrospectively analysed. In 30 patients imageless navigation was used, and 30 patients were operated upon using conventional jigs. Accuracy, implant position, operating time, and complications have been recorded. The navigation device improved the implant position with high accuracy. Implant-shaft angles <130 degrees and uncovered cancellous bone of the superior femoral neck could be safely avoided. After a significant learning curve, navigation took 15 minutes longer than conventional implantation. No complications were found in either group. Computer-assisted navigation allowed accurate implantation of the femoral component avoiding pitfalls of hip surface replacement. From our point of view the optimal placement of the femoral component outweighs the disadvantage of a longer operating time.
髋关节表面置换术越来越受欢迎。优化股骨部件的位置对于避免早期植入失败（如股骨颈骨折）至关重要。对60例髋关节表面置换术进行了回顾性分析。30例患者使用了无图像导航，30例患者使用传统夹具进行手术。记录了准确性、植入位置、手术时间和并发症。导航设备以高精度改善了植入位置。可以安全地避免植入物-骨干角度<130度以及股骨颈上方的松质骨未覆盖的情况。经过显著的学习曲线后，导航比传统植入手术多耗时15分钟。两组均未发现并发症。计算机辅助导航允许准确植入股骨部件，避免了髋关节表面置换的陷阱。从我们的角度来看，股骨部件的最佳放置比手术时间延长的缺点更为重要。
