一种用于术中评估膝关节前后向松弛度的导航系统的可靠性
Reliability of a navigation system for intra-operative evaluation of antero-posterior knee joint laxity.
作者信息
Lopomo Nicola, Bignozzi Simone, Martelli Sandra, Zaffagnini Stefano, Iacono Francesco, Visani Andrea, Marcacci Maurilio
机构信息
Istituto Ortopedico Rizzoli, Laboratorio di Biomeccanica, via di Barbiano, 1/10, Bologna BO 40136, Italy.
出版信息
Comput Biol Med. 2009 Mar;39(3):280-5. doi: 10.1016/j.compbiomed.2009.01.001. Epub 2009 Feb 20.
BACKGROUND
The purpose of this study was to investigate about the reliability of measuring antero-posterior laxity within-subjects for in-vivo studies using a navigation system.
METHODS
The analysis was performed by enroling 60 patients undergoing anterior cruciate ligament ACL reconstruction, and assessing AP laxity during the Lachman and drawer tests.
RESULTS
For the navigation system standard deviation for intra-trial measures was 0.7 mm, thus the intra-trial repeatability coefficient was 2.2 mm; standard deviation for intra-trial measure was 1.2 mm, while the reference inter-trial repeatability coefficient between expert surgeons was 3.4 mm.
CONCLUSIONS
In conclusion, this study suggests that KIN-Nav may represent a new method to measure and document AP laxity intra-operatively with improved accuracy and test the effect of surgical treatment in-vivo with higher sensitivity than in the past and this study quantify its reliability for within-subjects studies performed by a single expert surgeon.
背景
本研究的目的是调查使用导航系统进行体内研究时，测量受试者前后向松弛度的可靠性。
方法
通过招募60例接受前交叉韧带（ACL）重建的患者，并在Lachman试验和抽屉试验中评估前后向松弛度来进行分析。
结果
对于导航系统，试验内测量的标准差为0.7毫米，因此试验内重复性系数为2.2毫米；试验内测量的标准差为1.2毫米，而专家外科医生之间的参考试验间重复性系数为3.4毫米。
结论
总之，本研究表明，KIN-Nav可能代表一种术中测量和记录前后向松弛度的新方法，其准确性有所提高，并且能够以比过去更高的灵敏度在体内测试手术治疗效果，本研究还量化了其在由单一专家外科医生进行的受试者内研究中的可靠性。
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