Fryer Conor, Ithurburn Matthew P, McNally Michael P, Thomas Staci, Paterno Mark V, Schmitt Laura C
College of Arts and Sciences, The Ohio State University, Columbus, OH, USA.
Department of Physical Therapy, Center for Exercise Medicine, School of Health Professions, The University of Alabama at Birmingham, Birmingham, AL, USA; School of Health and Rehabilitation Sciences, The Ohio State University, Columbus, OH, USA.
Clin Biomech (Bristol). 2019 Feb;62:58-65. doi: 10.1016/j.clinbiomech.2018.11.012. Epub 2018 Nov 30.
Lower extremity landing asymmetries are common and associated with strength deficits after anterior cruciate ligament reconstruction. However, less is known regarding trunk control during landing. This study's hypotheses were that frontal plane trunk excursion during single-leg landing would be greater in young athletes after anterior cruciate ligament reconstruction compared to controls and would be associated with strength deficits.
Participants included 130 young athletes recently cleared for return-to-sport following anterior cruciate ligament reconstruction and 56 uninjured young athletes. Frontal plane trunk excursion was quantified using three-dimensional motion analysis during a single-leg landing task. Quadriceps and hip abduction strength were measured using an isokinetic dynamometer. Frontal plane trunk excursion was compared between the anterior cruciate ligament reconstruction and control groups and among quadriceps strength subgroups using independent t-tests and one-way analysis of variance. Linear regression examined the association between frontal plane trunk excursion and strength measures in the anterior cruciate ligament reconstruction group.
The anterior cruciate ligament reconstruction group demonstrated greater frontal plane trunk excursion compared to controls. The low-quadriceps group demonstrated greater frontal plane trunk excursion compared to both the high-quadriceps and control groups. Additionally, the high-quadriceps group demonstrated greater frontal plane trunk excursion compared to controls. In the anterior cruciate ligament reconstruction group, lower quadriceps and hip abduction strength were weakly associated with greater frontal plane trunk excursion.
Young athletes at time of return-to-sport after anterior cruciate ligament reconstruction demonstrated increased frontal plane trunk excursion during single-leg landing. Additionally, increased frontal plane trunk excursion was weakly associated with strength deficits.
下肢落地不对称情况常见，且与前交叉韧带重建术后的力量缺陷相关。然而，关于落地时的躯干控制了解较少。本研究的假设是，与对照组相比，前交叉韧带重建后的年轻运动员单腿落地时在额状面的躯干偏移会更大，且会与力量缺陷相关。
参与者包括130名近期经评估可恢复运动的前交叉韧带重建后的年轻运动员以及56名未受伤的年轻运动员。在单腿落地任务期间，使用三维运动分析对额状面的躯干偏移进行量化。使用等速测力计测量股四头肌和髋关节外展力量。使用独立t检验和单因素方差分析比较前交叉韧带重建组和对照组之间以及股四头肌力量亚组之间的额状面躯干偏移。线性回归分析前交叉韧带重建组中额状面躯干偏移与力量测量值之间的关联。
与对照组相比，前交叉韧带重建组表现出更大的额状面躯干偏移。低股四头肌力量组与高股四头肌力量组和对照组相比，表现出更大的额状面躯干偏移。此外，高股四头肌力量组与对照组相比，表现出更大的额状面躯干偏移。在前交叉韧带重建组中，较低的股四头肌和髋关节外展力量与更大的额状面躯干偏移存在弱关联。
前交叉韧带重建后恢复运动时的年轻运动员在单腿落地时表现出更大的额状面躯干偏移。此外，更大的额状面躯干偏移与力量缺陷存在弱关联。
