计算机辅助微创全髋关节置换术中股骨无针长度和偏移量测量
Femoral pinless length and offset measurements during computer-assisted, minimally invasive total hip arthroplasty.
作者信息
Renkawitz Tobias, Sendtner Ernst, Schuster Tibor, Weber Markus, Grifka Joachim, Woerner Michael
机构信息
Department of Orthopaedic Surgery, Regensburg University Medical Center, Bad Abbach, Germany.
Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, Canada.
出版信息
J Arthroplasty. 2014 May;29(5):1021-5. doi: 10.1016/j.arth.2013.09.034. Epub 2013 Oct 1.
We asked whether the intraoperative assessment of leg length (LL) and offset (OS) change would be accurate using a novel pinless femoral reference system during unilateral minimally invasive THA in 50 patients with a mean age of 60 years (48-79). LL and OS change measured at surgery was compared with LL/OS change as measured on magnification-corrected preoperative and postoperative radiographs by two blinded examiners. The radiographic evaluation showed a high inter-rater reliability (r > 0.80 for all assessments). The mean differences (± 95% limits of agreement) between navigation and radiographic measurements on the treated side were +0.4mm (± 3.6) for LL and -1.0 mm (± 3.9) for OS. Femoral pinless navigation technology represents a feasible assistance in THA.
我们询问，在50例平均年龄60岁（48 - 79岁）的患者行单侧微创全髋关节置换术（THA）时，使用一种新型无针股骨参考系统对下肢长度（LL）和偏移（OS）变化进行术中评估是否准确。将手术中测量的LL和OS变化与两名盲法检查者在术前和术后经放大校正的X线片上测量的LL/OS变化进行比较。影像学评估显示评分者间可靠性高（所有评估的r>0.80）。治疗侧导航与影像学测量之间的平均差异（±95%一致性界限）为，LL为+0.4mm（±3.6），OS为-1.0mm（±3.9）。无针股骨导航技术在全髋关节置换术中是一种可行的辅助手段。
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