髋关节表面置换术中股骨假体定位的透视引导技术的放射学验证。
Radiological validation of a fluoroscopic guided technique for femoral implant positioning during hip resurfacing.
机构信息
The Service de Chirurgie Orthopédique et de Traumatologie, Centre Hospitalier Universitaire de Rangueil, Toulouse, France.
出版信息
Int Orthop. 2013 Mar;37(3):361-8. doi: 10.1007/s00264-013-1777-9. Epub 2013 Jan 29.
PURPOSE
The positioning of the femoral cup in hip resurfacing is essential for the survival of the implant. We described a technique in 2005 to position the femoral cup guided by fluoroscopy independent of the approach performed. The main objectives were to study the positioning of the femoral components of the implant and the accuracy of the technique.
METHODS
Between 2003 and 2011 we conducted a prospective study of 160 consecutive hip resurfacings all operated with this fluoroscopic-guided technique. Three independent observers performed a radiographic analysis at the pre-operative planning stage and on postoperative radiographs using OsiriX software. The statistical analysis was based on comparison of two groups by Student's t test.
RESULTS
The entire implant was positioned in valgus, with an average of 7.816° valgus (p <0.001). All implants were positioned in neutral or anteverted with a mean of 1.98° (p <0.001). The risk of malpositioning on the antero-posterior plane was less than 1.41° with p <0.019. The risk of profile positioning error was lower than 0.80° with p <0.047.
CONCLUSION
This study validates a technique of femoral implant positioning for resurfacing. It is simple, precise and independent of the approach performed.
目的
髋关节表面置换术中股骨杯的定位对于植入物的存活至关重要。我们在 2005 年描述了一种技术，该技术可在不依赖所进行入路的情况下通过透视引导来定位股骨杯。主要目标是研究植入物的股骨部件的定位和该技术的准确性。
方法
在 2003 年至 2011 年期间，我们对 160 例连续髋关节表面置换术进行了前瞻性研究，所有手术均采用这种透视引导技术。三位独立观察者在术前规划阶段和术后使用 OsiriX 软件进行放射学分析。统计分析基于两组间的比较，采用学生 t 检验。
结果
整个植入物都被定位在外翻位，平均外翻 7.816°（p<0.001）。所有植入物均被定位在中立或前旋位，平均为 1.98°（p<0.001）。在前后位的错位风险小于 1.41°（p<0.019）。轮廓定位误差的风险低于 0.80°（p<0.047）。
结论
本研究验证了一种髋关节表面置换术股骨植入物定位技术。该技术简单、精确，且不依赖所进行的入路。
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