Sports Medicine Research Laboratory, Public Research Center for Health, 1460 Luxembourg, Luxembourg.
Knee Surg Sports Traumatol Arthrosc. 2012 Apr;20(4):645-51. doi: 10.1007/s00167-011-1877-2. Epub 2012 Jan 14.
The purpose of this study was to evaluate the influence of individual characteristics on rotational knee laxity in healthy participants. Our second aim was to verify whether the contralateral knee of patients with a non-contact ACL injury presents greater rotational knee laxity than a healthy control group.
Sixty healthy participants and 23 patients having sustained a non-contact ACL injury were tested with a new Rotameter prototype applying torques up to 10 Nm. Multiple linear regressions were performed to investigate the influence of gender, age, height and body mass on rotational knee laxity and to establish normative references for a set of variables related to rotational knee laxity. Multiple analyses of covariance were performed to compare the contralateral knee of ACL-injured patients and healthy participants.
Being a women was associated with a significantly (P < 0.05) higher rotational knee laxity, and increased body mass was related to lower laxity results. In the multiple analyses of covariance, gender and body mass were also frequently associated with rotational knee laxity. When controlling for these variables, there were no differences in measurements between the contralateral leg of patients and healthy participants.
In the present setting, gender and body mass significantly influenced rotational knee laxity. Furthermore, based on these preliminary results, patients with non-contact ACL injuries do not seem to have excessive rotational knee laxity.
Retrospective comparative study, Level III.
本研究旨在评估个体特征对健康参与者膝关节旋转松弛度的影响。我们的第二个目的是验证非接触性前交叉韧带损伤患者的对侧膝关节的旋转松弛度是否大于健康对照组。
60 名健康参与者和 23 名非接触性前交叉韧带损伤患者使用新型 Rotameter 原型进行测试，施加的扭矩高达 10 Nm。进行多元线性回归分析，以研究性别、年龄、身高和体重对膝关节旋转松弛度的影响，并建立与膝关节旋转松弛度相关的一组变量的正常参考值。进行多次协方差分析，以比较 ACL 损伤患者的对侧膝关节和健康参与者的膝关节。
女性与膝关节旋转松弛度显著增加（P < 0.05）相关，而体重增加与松弛度降低相关。在多次协方差分析中，性别和体重也经常与膝关节旋转松弛度相关。当控制这些变量时，患者对侧肢体与健康参与者之间的测量值没有差异。
在本研究中，性别和体重显著影响膝关节旋转松弛度。此外，基于这些初步结果，非接触性前交叉韧带损伤患者似乎没有过度的膝关节旋转松弛度。
回顾性比较研究，III 级。
