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首页> 外文会议>International Conference on Biomedical Engineering >Landing Patterns in Subjects with Recurrent Lateral Ankle Sprains
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Landing Patterns in Subjects with Recurrent Lateral Ankle Sprains

机译：具有复发性侧踝螺纹的受试者的着陆模式

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Introduction The most common symptoms after ankle sprains were chronic ankle instability, proprioception defect and probable neuromuscular adaptation. The purpose of this study was to identify the normal landing pattern using detailed biomechanical analysis including analysis of the kinematics and ground reaction force, and to compare the landing pattern in the subjects with recurrent ankle sprain and normal subjects. METHODS Ten male adults were recruited in this study (5 subjects with recurrent lateral ankle sprains group, 5 subjects with normal control group). All subjects would be asked to perform maximal standing jumps and drop landing from 3 platforms with different heights (0.37 m, 0.67 m, & 0.97 m, respectively). Those movements were collected by VTCON 512 (Oxford Metrics, UK) motion analysis system and the kinematics was analyzed using self making software with MATLAB. The ground reaction force of both lower limbs was recorded by two AMTI force platforms, arid the kinetic data were calculated with inverse dynamics. RESULTS In the different landing height, the main differences of kinematics were the maximum flexion angles of hip and knee joints in normal landing patterns and the flexion angles increased with the landing height, as well as the flexion of pelvis, hip abduction, and knee external rotation in the subjects with recurrent ankle sprains. When compare those two groups, the landing pattern in the subjects with recurrent ankle sprain was significant smaller than normal subjects in knee flexion (65.71°±6.43° vs. 70.19°±13.76°) and hip flexion (34.15°±5.42° vs. 42.54°±10.07°). The time to maximum angles in ankle dorsiflexion and foot pronation were also quite different between these two groups. The maximum vertical ground reaction force in sprain group was significant smaller than normal group. CONCLUSION In this study, we have revealed the adaptation of performing drop landing in the individuals with recurrent ankle sprains. It could be considered as a recommendation of the rehabilitation..
机译：踝关节扭伤后最常见的症状是慢性踝关节不稳定性，预缺陷缺陷和可能的神经肌肉适应性。本研究的目的是使用详细的生物力学分析来识别正常着陆模式，包括对运动学和地面反作用力的分析，并比较受试者的着陆模式与复发性踝关节扭伤和正常受试者。方法在本研究中招募了十种男性成人（5种患有复发性侧踝扭伤组的受试者，5个患有正常对照组的受试者）。所有受试者都将被要求执行最大的跳跃和从具有不同高度的3个平台降落（分别为0.37米，0.97米）。这些动作由VTCON 512收集（牛津指数，英国）运动分析系统，使用与MATLAB的自制作软件分析了运动学。两个下肢的接地反作用力被两个AMTI力平台记录，并且通过逆动力学计算动力学数据。导致不同的着陆高度，运动学的主要差异是正常着陆模式中髋关节和膝关节的最大屈曲角度，并且屈曲角度随着着陆高度而增加，以及骨盆，臀部绑架和膝关节的屈曲用复制踝螺纹的受试者旋转。当比较这两组时，具有复发性踝关节扭伤的受试者的着陆模式显着小于膝关节屈曲的正常受试者（65.71°±6.43°与70.19°±13.76°）和臀部屈曲（34.15°±5.42°。 42.54°±10.07°）。这两组之间的脚踝背屈和脚部角度的最大角度的时间也很大。扭伤组的最大垂直接地反作用力显着小于正常组。结论在这项研究中，我们透露了对具有复发踝螺纹的个体表演降落的适应。它可以被视为康复的推荐。

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