Department of Physical Therapy, University of Nevada, Las Vegas, 4505 S. Maryland Parkway, Box 453029, Las Vegas, NV 89154, USA.
Int J Environ Res Public Health. 2021 Jul 1;18(13):7047. doi: 10.3390/ijerph18137047.
Individuals with anterior cruciate ligament reconstruction (ACLR) are at a higher risk for subsequent anterior cruciate ligament (ACL) tears. Risk factors for ACL injuries likely involve a combination of anatomical, biomechanical, and neuromuscular factors. Dynamic knee valgus has been indicated as a possible biomechanical factor for future ACL injuries. Given that knee valgus is often accompanied by contralateral pelvic drop during single-leg activities, a dynamic valgus index (DVI) that quantifies combined kinematics of the knee and hip in the frontal plane has recently been developed. As the premise of asymmetrical DVI between limbs in the ACLR population has not been examined, this cross-sectional study was conducted with the aim to compare DVI between individuals with ACLR and healthy controls. Videos were taken for 12 participants with ACLR and 20 healthy controls when they performed single-leg hopping. One-way ANOVA revealed a higher DVI in the injured limb of the ACLR group when compared to their non-injured limb and to the healthy limb of the control group. As our data showed increased DVI in the injured limb of the ACLR group, the DVI approach accounting for hip and knee kinematics may be used to identify frontal plane movement deficits during single-leg hopping in individuals with ACLR.
接受前交叉韧带重建 (ACLR) 的个体发生前交叉韧带 (ACL) 再次撕裂的风险较高。ACL 损伤的危险因素可能涉及解剖学、生物力学和神经肌肉因素的综合作用。膝关节动态外翻已被认为是未来 ACL 损伤的一个可能的生物力学因素。由于膝关节外翻通常伴有单腿活动中对侧骨盆下降，因此最近开发了一种在额状面量化膝关节和髋关节联合运动的动态外翻指数 (DVI)。由于 ACLR 人群中肢体不对称 DVI 的前提尚未得到检验，因此进行了这项横断面研究，旨在比较 ACLR 个体和健康对照组之间的 DVI。当 12 名 ACLR 参与者和 20 名健康对照者进行单腿跳跃时，拍摄了视频。单因素方差分析显示，与非受伤肢体和对照组的健康肢体相比，ACL 组受伤肢体的 DVI 更高。由于我们的数据显示 ACLR 组受伤肢体的 DVI 增加，因此可能使用考虑髋关节和膝关节运动学的 DVI 方法来识别 ACLR 个体在单腿跳跃期间的额状面运动缺陷。
