正常人群步行足偏角与年龄特征分析

Analysis of the relevance of age and toe out angle of normal adults' gait

老年人群由于运动能力退化及受到疾病的影响,容易导致步态异常,而异常步态通常会增加老年人的跌倒风险,带来严重伤害。本文重点对正常无运动功能障碍人群的步态运动学参数进行了研究分析,目的是为了研究不同年龄阶段步态参数的特征,探索步态参数在运动机能评估和临床诊断中的作用。本研究基于电子步道采集步态数据,对足偏角和足间夹角等一系列特征以及这些特征与受试者年龄、性别等因素的相关性进行了定量分析。研究结果表明,大部分受试者正常步行时呈正向步态,足偏角会随着年龄的增长而变大,在中青年期变化缓慢,但进入老年后(>60岁)左足偏角和足间夹角明显升高,变化产生的差异具有统计学意义,研究结果还提示足间夹角是一种普适性强的步态参数。通过本文的研究结果提示,对足偏角进行定量分析有望成为一种对人体下肢运动能力评估及膝关节疾病诊断的便捷、有效的方法。

Due to the decline of motor ability and the impact of the diseases, abnormalities in gait is common in the elderly population, which will raise the risk of fall and cause serious injury. This study focuses on the analysis of the gait kinematics parameters of normal adults＇ gait, aiming to investigate the characteristics of gait parameters in different age groups and to explore the role of gait parameters in motor function assessment and clinical diagnosis. Based on the gait data gained by electronic walkway, the relationship among the toe out angles and their correlation with age and gender etc. were quantitatively analyzed. The results show that most normal subjects walk with positive toe out angles, and the angles increase with age. Such changes are slow in the young and middle age groups. However, the elevations of the left out toe angle and the angles between the feet are statistically significant after entering elder age （ 〉60 years）. The results also suggest that the angle between the feet is a kind of practical gait parameter for varying applications. This study concludes that feet angle analysis is potential to provide a convenient and quantitative tool for the assessment of lower limb motor ability and the diagnosis of knee joint diseases.