Knee injuries at risk of post-traumatic knee osteoarthritis (PTOA) and knee osteoarthritis (OA) are closely associated with knee transverse plane and/or frontal plane instability and excessive loading. However, most existing training and rehabilitation devices involve mainly movements in the sagittal plane. An offaxis elliptical training system was developed to train and evaluate neuromuscular control about the off-axes (knee varus/valgus and tibial rotation) as well as the main flexion/extension axis (sagittal movements). Effects of the offaxis elliptical training system in improving either transverse or frontal neuromuscular control depending on subjects’ need (Pivoting group, Sliding group) were demonstrated through 6-week subject-specific neuromuscular training in subjects with knee injuries at risk of PTOA or medial knee osteoarthritis. The combined pivoting and sliding group, named as offxis group demonstrated significant reduction in pivoting instability, minimum pivoting angle, and sliding instability. The pivoting group showed more reduction in pivoting instability, maximum and minimum pivoting angle than the sliding group. On the other hand, the sliding group showed more reduction in sliding instability, maximum and minimum sliding distance than the pivoting group. Based on these findings, the offaxis elliptical trainer system can potentially be used as a therapeutic and research tool to train human subjects for plane-dependent improvements in their neuromuscular control during functional weight-bearing stepping movements.

中文翻译：

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用于膝关节康复的平面相关主题特定神经肌肉训练。

有创伤后膝关节骨关节炎 (PTOA) 和膝关节骨关节炎 (OA) 风险的膝关节损伤与膝关节横断面和/或额状面不稳定和过度负荷密切相关。然而，大多数现有的训练和康复设备主要涉及矢状面的运动。开发了一个离轴椭圆训练系统来训练和评估关于离轴（膝内翻/外翻和胫骨旋转）以及主屈曲/伸展轴（矢状运动）的神经肌肉控制。通过对有 PTOA 风险或膝关节内侧损伤风险的受试者进行为期 6 周的特定于受试者的神经肌肉训练，证明了离轴椭圆训练系统在根据受试者的需要（旋转组、滑动组）改善横向或正面神经肌肉控制方面的效果骨关节炎。组合的旋转和滑动组，命名为 offxis 组，显示旋转不稳定性、最小旋转角度和滑动不稳定性显着降低。与滑动组相比，旋转组在旋转不稳定性、最大和最小旋转角度方面表现出更多的减少。另一方面，滑动组在滑动不稳定性、最大和最小滑动距离方面比枢轴组更能减少。基于这些发现，离轴椭圆训练器系统有可能被用作一种治疗和研究工具，以训练人类受试者在功能性负重步进运动中的神经肌肉控制方面的平面依赖性改进。和滑动不稳定。与滑动组相比，旋转组在旋转不稳定性、最大和最小旋转角度方面表现出更多的减少。另一方面，滑动组在滑动不稳定性、最大和最小滑动距离方面比枢轴组更能减少。基于这些发现，离轴椭圆训练器系统有可能被用作一种治疗和研究工具，以训练人类受试者在功能性负重步进运动中的神经肌肉控制方面的平面依赖性改进。和滑动不稳定。与滑动组相比，旋转组在旋转不稳定性、最大和最小旋转角度方面表现出更多的减少。另一方面，滑动组在滑动不稳定性、最大和最小滑动距离方面比枢轴组更能减少。基于这些发现，离轴椭圆训练器系统有可能被用作一种治疗和研究工具，以训练人类受试者在功能性负重步进运动中的神经肌肉控制方面的平面依赖性改进。