Kinematics of hip,knee,ankle of the young and elderly Chinese people during kneeling activity  

作　　者：Hai ZHOU Dong-mei WANG Tao-ran LIU Xiang-sen ZENG Cheng-tao WANG 

出　　处：《Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)》2013年第9期854-854,共1页浙江大学学报（英文版）B辑（生物医学与生物技术）

摘　　要：Objective:The purpose of this study was to measure the kinematics of the lower limbs of Chinese people during normal kneeling activity,as such data could be valuable in designing joint prosthesis and arthroplasty that meet the needs of Chinese citizens' daily activities.Methods:Thirty young and twenty elderly Chinese participants with no personal history of joint diseases were recruited,and matched by age(average age:23.8 years for the young group,60.8 years for the elderly group).Each participant performed six trials during which three-dimensional(3D) kinematics data were collected and the means of the 3D angles of the ankle,knee,and hip joints of two groups were calculated.Results:There were no obvious differences between the two groups in the knee and ankle joints.The mean range of knee flexion was 139.6° for the young group and 140.9° for the elderly group.The mean range of ankle flexion was 35.7° for the young group and 37.6° for the elderly group.The maximal eccentric flexion at the hip joint was 67.5° for the young group compared to 100.5° for the elderly group.Conclusions:The elderly uses more hip flexion angles than the young when assuming the kneeling posture.The ranges of motion obtained during kneeling activity are greater than the reported mean ranges of motion achieved following joint arthroplasty.The data could be valuable in establishing criteria for lower limb prosthetics and rehabilitation protocol for the Chinese population.Objective：The purpose of this study was to measure the kinematics of the lower limbs of Chinese people during normal kneeling activity,as such data could be valuable in designing joint prosthesis and arthroplasty that meet the needs of Chinese citizens＇ daily activities.Methods：Thirty young and twenty elderly Chinese participants with no personal history of joint diseases were recruited,and matched by age（average age：23.8 years for the young group,60.8 years for the elderly group）.Each participant performed six trials during which three-dimensional（3D） kinematics data were collected and the means of the 3D angles of the ankle,knee,and hip joints of two groups were calculated.Results：There were no obvious differences between the two groups in the knee and ankle joints.The mean range of knee flexion was 139.6° for the young group and 140.9° for the elderly group.The mean range of ankle flexion was 35.7° for the young group and 37.6° for the elderly group.The maximal eccentric flexion at the hip joint was 67.5° for the young group compared to 100.5° for the elderly group.Conclusions：The elderly uses more hip flexion angles than the young when assuming the kneeling posture.The ranges of motion obtained during kneeling activity are greater than the reported mean ranges of motion achieved following joint arthroplasty.The data could be valuable in establishing criteria for lower limb prosthetics and rehabilitation protocol for the Chinese population.

关 键 词：中国人口 老年人 踝关节 运动学 年轻人 平均年龄 髋关节 关节疾病 

分 类 号：R87[医药卫生—运动医学]