ANKLE PUSH-OFF METRICS AND ELECTROMYOGRAPHY DURING GAIT IN CHILDREN WITH MILD TO MODERATE OSTEOGENESIS IMPERFECTA

被引：0

作者：

Konop, Katherine A. ^{[1
]}

Fritz, Jessica M. ^{[2
]}

Graf, Adam ^{[3
]}

Celin, Mercedes Rodriguez ^{[3
]}

Kruger, Karen M. ^{[1
,3
]}

Radmanovic, Katarina ^{[1
]}

Krzak, Joseph ^{[3
,4
]}

Yang, Kai ^{[5
]}

Teng, Bi Qing ^{[5
]}

Smith, Peter ^{[3
]}

Harris, Gerald F. ^{[1
,2
]}

机构：

[1] Orthopaedic and Rehabilitation Engineering Center, Marquette University, Milwaukee, WI

[2] Department of Orthopaedic Surgery, Medical College of Wisconsin, Milwaukee, WI

[3] Shriners Hospital for Children, Chicago, IL

[4] Physical Therapy Program, Midwestern University, Downers Grove, IL

[5] Department of Biostatistics, Medical College of Wisconsin, Milwaukee, WI

来源：

Biomedical Sciences Instrumentation | 2024年 / 60卷 / 01期

关键词：

ankle mechanics; EMG; gait analysis; gastrocnemius; Osteogenesis imperfecta;

D O I：

10.34107/JIDC656041

中图分类号：

学科分类号：

摘要：

Mobility is important for health and well-being. Children with mild to moderate osteogenesis imperfecta (OI) are generally community ambulators but often have mobility deficits compared to typically developing peers. Ankle dynamics play an important role in the gait cycle and contribute greatly to an individual’s push-off power, or ability to propel the body forward effectively. Previous studies have identified differences in gait parameters of children with OI compared to typically developing peers, including ankle kinematics and kinetics. We hypothesize that dysfunction at the ankle joint is related to pathologic plantarflexor muscle activation patterns. This study analyzes medial gastrocnemius muscle activity via surface electromyography (sEMG), in addition to sagittal plane ankle kinematics and kinetics. Data from participants with mild to moderate OI (n=17) and typically developing age-matched controls (n=9) were analyzed and compared. The OI group demonstrated longer stance duration and double support time than controls. The OI group had a shortened push-off phase, delayed and shortened gastrocnemius activation, delayed peak dorsiflexion and plantarflexion angles, decreased total ankle power peak generation and generation energy area. This study has confirmed that differences in plantarflexor muscle activation do exist in the OI population compared to controls. Future research including larger population size and expanded scope (analysis of other muscles and joints) would broaden our understanding of the dysfunction seen at the ankle joint. This could lead to targeted therapeutic intervention to improve mobility in individuals with OI. © 2024 IAE All rights reserved.

引用

页码：41 / 56

页数：15

共 46 条

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