School of Sport and Health Science, Dalian University of Technology, Dalian 116024, China.
College of General Aviation and Flight, Nanjing University of Aeronautics and Astronautics, Nanjing 213300, China.
Int J Environ Res Public Health. 2023 Mar 6;20(5):4652. doi: 10.3390/ijerph20054652.
Single-leg landing is one of the maneuvers that has been linked to non-contact anterior cruciate ligament (ACL) injuries, and wearing knee braces has been shown to reduce ACL injury incidence. The purpose of this study was to determine whether wearing a knee brace has an effect on muscle force during single-leg landings at two heights through musculoskeletal simulation. Eleven healthy male participants, some braced and some non-braced were recruited to perform single-leg landings at 30 cm and 45 cm. We recorded the trajectories and ground reaction forces (GRF) using an eight-camera motion capture system and a force platform. The captured data were imported into the generic musculoskeletal model (Gait2392) in OpenSim. Static optimization was used to calculate the muscle forces. The gluteus minimus, rectus femoris, vastus medialis, vastus lateralis, vastus medialis medial gastrocnemius, lateral gartrocnemius, and soleus muscle forces were all statistically significant different between the braced and non-braced participants. Simultaneously, increasing the landing height significantly affected the gluteus maximums, vastus medialis, and vastus intermedia muscle forces. Our findings imply that wearing a knee brace may alter muscle forces during single-leg landings, preventing ACL injuries. Additionally, research demonstrates that people should avoid landing from heights due to the increased risk of knee injuries.
单腿着陆是与非接触性前交叉韧带（ACL）损伤相关的动作之一，而佩戴膝关节支具已被证明可以降低 ACL 损伤的发生率。本研究的目的是通过肌肉骨骼模拟来确定佩戴膝关节支具是否会影响两种高度的单腿着陆时的肌肉力量。招募了 11 名健康男性参与者，一些佩戴支具，一些不佩戴支具，以 30 厘米和 45 厘米的高度进行单腿着陆。我们使用八相机运动捕捉系统和力台记录了轨迹和地面反作用力（GRF）。捕获的数据被导入 OpenSim 中的通用肌肉骨骼模型（Gait2392）。使用静态优化来计算肌肉力量。与不佩戴支具的参与者相比，佩戴支具的参与者的臀小肌、股直肌、股内侧肌、股外侧肌、股内侧肌内侧腓肠肌、外侧腓肠肌和比目鱼肌的肌肉力量均有统计学显著差异。同时，增加着陆高度显著影响臀大肌、股内侧肌和股中间肌的肌肉力量。我们的研究结果表明，佩戴膝关节支具可能会改变单腿着陆时的肌肉力量，从而预防 ACL 损伤。此外，研究表明，人们应该避免从高处着陆，因为这样会增加膝盖受伤的风险。
