Simulated Tibiofemoral Joint Reaction Forces for Three Previously Studied Gait Modifications in Healthy Controls.
Simulated Tibiofemoral Joint Reaction Forces for Three Previously Studied Gait Modifications in Healthy Controls.
复制标题
模拟胫股关节反作用力，用于之前研究的健康控制中的三种步态修改。
DOI：
10.1115/1.4055885
复制
发表时间：
2023
期刊：
影响因子：
--
通讯作者：
Cortes,Nelson
中科院分区：
文献类型：
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作者：
Prebble,Matt;Wei,Qi;Martin,Joel;Eddo,Oladipo;Lindsey,Bryndan;Cortes,Nelson
步态改变，如躯干外侧倾斜 (LTL)、膝关节内侧推力 (MKT) 和内八字步态 (TIG)，是经常研究的用于减缓膝骨关节炎进展的干预措施。 Lerner 膝关节模型旨在估计步态期间内侧和外侧间室的胫股关节反作用力 (JRF)。这些模型可能有助于估计步态改变对膝关节 JRF 的影响。我们假设与正常步态相比，所有步态修改都会降低 JRF。 20 名健康个体自愿参加这项研究（26.7±4.7 岁，1.75±0.1 m，73.4±12.4 kg）。收集了 10 项针对正常步态以及三种步态修改的试验：LTL、MKT 和 TIG。该数据用于通过使用 Lerner 膝关节模型的 opensimim 来估计膝关节内侧和外侧间室的第一和第二峰值中的 JRF。内侧室中的第一个峰与基线没有显着差异。在 TIG (6.6%) 和 LTL (4.9%) 的步态加载阶段，内侧间室的 JRF 降低，而 MKT (2.6%) 的 JRF 增加。但没有一个具有统计学意义。在内侧第二个峰值中发现 TIG (5.8%) 较基线显着增加。我们发现个体对步态干预的反应存在很大差异，这可能有助于解释缺乏统计显着性结果的原因。影响对步态修改的广泛反应的可能因素包括静态对齐以及参与者用于实施步态修改的肌肉协调策略变化的影响。
Gait modifications, such as lateral trunk lean (LTL), medial knee thrust (MKT), and toe-in gait (TIG), are frequently investigated interventions used to slow the progression of knee osteoarthritis. The Lerner knee model was developed to estimate the tibiofemoral joint reaction forces (JRF) in the medial and lateral compartments during gait. These models may be useful for estimating the effects on the JRF in the knee as a result of gait modifications. We hypothesized that all gait modifications would decrease the JRF compared to normal gait. Twenty healthy individuals volunteered for this study (26.7 ± 4.7 years, 1.75 ± 0.1 m, 73.4 ± 12.4 kg). Ten trials were collected for normal gait as well as for the three gait modifications: LTL, MKT, and TIG. The data were used to estimate the JRF in the first and second peaks for the medial and lateral compartments of the knee viaopensimusing the Lerner knee model. No significant difference from baseline was found for the first peak in the medial compartment. There was a decrease in JRF in the medial compartment during the loading phase of gait for TIG (6.6%) and LTL (4.9%) and an increasing JRF for MKT (2.6%). but none was statistically significant. A significant increase from baseline was found for TIG (5.8%) in the medial second peak. We found a large variation in individual responses to gait interventions, which may help explain the lack of statistically significant results. Possible factors influencing these wide ranges of responses to gait modifications include static alignment and the impacts of variation in muscle coordination strategies used, by participants, to implement gait modifications.