Farhad Mazoochian, Christoph Pellengahr, Armin Huber, Jörn Kircher, Hans Jürgen Refior, Volkmar Jansson
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引用次数: 14
摘要
我们研究了10例使用caspar系统(OrthoMaquet GmbH, Rastatt, Germany)行计算机辅助全髋关节置换术的患者，通过术前和术后CT检查。将手术后测量的椎弓根前倾角和平移偏差与术前计划的进行比较，作为质量控制。我们发现平均差异为7.8度(标准差6.3度;95% CI 3.3度-12.3度)，平均差异为1.8 (SD 1.7;95% CI 0.6-3.0) mm和1.2 (SD 1.4: 95% CI 0.25-2.2)，分别为内侧和外侧偏。总之，我们无法证实种植体位置的准确性与制造商声称的相同。
Low accuracy of stem implantation in THR using the CASPAR-system: anteversion measurements in 10 hips.
We studied 10 patients by means of pre- and postoperative CT who underwent computer-assisted total hip replacement using the CASPAR-system (OrthoMaquet GmbH, Rastatt, Germany). The anteversion angles of the stem and translational deviations measured after surgery were compared to the preoperatively planned ones as a quality control. We found an average difference of 7.8 degrees (SD 6.3 degrees; 95% CI 3.3 degrees-12.3 degrees) in the angles and an average difference of 1.8 (SD 1.7; 95% CI 0.6-3.0) mm and 1.2 (SD 1.4: 95% CI 0.25-2.2), respectively, in the medial and lateral deviation. In conclusion, we could not confirm the same accuracy of implant position as that claimed by the manufacturer.
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