Liodakis E, Kenawey M, Liodaki E, Mommsen P, Krettek C, Hankemeier S
Department of Trauma Surgery, Medical School Hannover, Hannover, Germany.
Technol Health Care. 2010;18(3):165-71. doi: 10.3233/THC-2010-0579.
Accurate intraoperative assessment of lower limb alignment is crucial for the treatment of long bone fractures, implantation of knee arthroplasties and correction of deformities.
The aim of this study is to present a new technique for the intraoperative analysis of the mechanical axis.
The axis board is placed under the patient's lower limb. With the centre of the ankle and hip lying on the reference line we can assess the mechanical axis of the lower limb. This technique was used in 38 cases (19 high tibial osteotomies, 13 femoral fractures and 6 tibial fractures).
Comparing the intraoperative tibiofemoral angles and Mechanical Axis Deviations (MAD) with the results of the postoperative long standing radiographs we showed an accuracy of 1 +/- 0.9 degrees and 2.9 +/- 2.6 mm respectively.
The method is a simple and convenient option for intraoperative evaluation of the mechanical axis. However, for complex corrections we still recommend the use of navigation systems.
术中准确评估下肢力线对于长骨骨折的治疗、膝关节置换术的植入以及畸形矫正至关重要。
本研究的目的是介绍一种用于术中分析机械轴的新技术。
将轴板置于患者下肢下方。使踝关节和髋关节中心位于参考线上，我们就能评估下肢的机械轴。该技术应用于38例患者（19例高位胫骨截骨术、13例股骨骨折和6例胫骨骨折）。
将术中胫股角和机械轴偏差（MAD）与术后长期站立位X线片结果进行比较，结果显示其准确性分别为1±0.9度和2.9±2.6毫米。
该方法是术中评估机械轴的一种简单便捷的选择。然而，对于复杂的矫正，我们仍建议使用导航系统。
