Research Of Gait Characteristics Of Duchenne/becker Muscular Dystrophy Children By Three-Dimensional Gait Analysis System

Objective: This study is to investigate the abnormal gait characteristics in Duchenne/Becker muscular dystrophy children by three-dimensional gait analysis(3DGA),To provide a reference for the evaluation of motor function of these children.Methods: Ten Duchenne/Becker muscular dystrophy children and ten age-matched normal children were recruited to participate in this study,divided into the muscular dystrophy group and the normal control group.Three-dimensional gait analysis was used to get the temporal and spatial parameters and joint kinematic patterns of all the children.Follow-up three-dimensional gait examination six months later..Results:1.The Duchenne/Becker muscular children had significantly shorter step length and stride length,and slower velocity;2.Muscular dystrophy group compared with normal control group,the knee joint maximum entension angle,ankle dorsiflexion angle,ankle maximum rangeof motion in sagittal plane reduced obviously after 6 months;3.In the group of muscular dystrophy,the maximum dorsiflexion angle and maximum range of motion in sagittal plane of the ankle decreased significantly after 6months.Conclusion:The muscle weakness of the Duchenne/Becker muscular dystrophy children lead to the ankle drosalflexion weakness,shorter step length and stride length,slower velocity,to keep stable walking.With the progress of the disease,there is a significant difference compared with the normal children.Three dimensional gait analysis can be used to quantitatively assess the gait characteristics of children with Duchenne/Becker muscular dystrophy.Long-term follow-up and large sample data collection can help to understand the development law of patients’ motor function and provide basis for clinical diagnosis and treatment.