Gait patterns comparison of children with Duchenne muscular dystrophy to those of control subjects considering the effect of gait velocity
Gait patterns comparison of children with Duchenne muscular dystrophy to those of control subjects considering the effect of gait velocity
复制标题
DOI：
10.1016/j.gaitpost.2010.06.003
复制
发表时间：
2010-07-01
期刊：
影响因子：
2.4
通讯作者：
Gagnon, Denis
中科院分区：
文献类型：
--
作者：
Gaudreault, Nathaly;Gravel, Denis;Gagnon, Denis
Duchenne型肌营养不良症（DMD）儿童步态的3D分析仅是少数研究的主题，这些研究均未考虑步态速度对DMD儿童步态参数的影响。对11例DMD患儿和14例正常儿童的步态参数进行了比较，同时考虑了步态速度的影响，采用三维生物力学分析。使用Optotrak运动分析系统和嵌入地板的AMTI测力板测量运动学和动力学步态参数。将DMD儿童以自然步态速度行走的数据概况与以自然和缓慢步态速度行走的对照儿童的数据概况进行比较。当两组以相似的速度行走时，DMD儿童的步频更高，步长更短。他们表现出较低的髋关节伸展力矩以及最小或不存在的膝关节伸展力矩。在踝关节处，由于压力中心的前部位置，在脚跟着地时没有背屈力矩。DMD儿童的内外侧地面反作用力的大小更高。尽管增加，髋外展肌力矩较低。DMD儿童在站立中期也观察到髋关节发电。这些结果表明，观察到的大多数修改是DMD儿童用于科普可能的肌肉无力的策略，以便在步态期间提供身体的支撑，推进和平衡。(C)2010 Elsevier B.V.保留所有权利。
3D analysis of the gait of children with Duchenne muscular dystrophy (DMD) was the topic of only a few studies and none of these considered the effect of gait velocity on the gait parameters of children with DMD. Gait parameters of 11 children with DMD were compared to those of 14 control children while considering the effect of gait velocity using 3D biomechanical analysis. Kinematic and kinetic gait parameters were measured using an Optotrak motion analysis system and AMTI force plates embedded in the floor. The data profiles of children with DMD walking at natural gait velocity were compared to those of the control children who walked at both natural and slow gait velocities. When both groups walked at similar velocity, children with DMD had higher cadence and shorter step length. They demonstrated a lower hip extension moment as well as a minimal or absent knee extension moment. At the ankle, a dorsiflexion moment was absent at heel strike due to the anterior location of the center of pressure. The magnitude of the medio-lateral ground reaction force was higher in children with DMD. Despite this increase, the hip abductor moment was lower. Hip power generation was also observed at the mid-stance in DMD children. These results suggest that most of the modifications observed are strategies used by children with DMD to cope with possible muscle weakness in order to provide support, propulsion and balance of the body during gait. (C) 2010 Elsevier B.V. All rights reserved.