Dynamic analysis and modeling for lower extremity flexors and extensor in children with cerebral palsy by the use of opensim

Objective: To determine the kinematics quantities to evaluate the impact and comparison oflower extremity flexors and to use kinetics to evaluate muscular forces and torquesDesign: A cross-sectional prospective study.Subjects: twelve children with cerebral palsy, two healthy people (8-12 years old)Materials and Methods: Experiments were performed in a laboratory environment with selfselectedgait. All samples were also examined by a physiotherapist. Finally, all the samples havebeen modeled in Opensim software to further investigate and provide a skeletal muscle model.GaitFullBody and Lowerbody model from the opensim Managed Model Repository v.3.3 ofthe commercial software package opensim Modeling System (Opensim Technology , Stanforduniversity, USA) was employed.Findings: A comparison of range of motion and forces and joint moments in cerebral palsyand healthy is presented. The differences presented indicate the amount of muscle activitybetween the two groups. (P<0.05)Conclusion: In this study, we propose a musculoskeletal model based on muscle strength andmotor computation. In addition, the model can predict muscle activity. During walking inchildren with CP spasm was consistent with measured muscle activity. Using musculoskeletalmodels may be important to advance our understanding of motor disorders due to spasm. Inaddition, the inclusion of spasm models in predictors. Walking simulations may lead to moreaccurate simulation of gait kinematics and eventually used to predict treatment outcome inchildren with CP.

Keywords:

Modeling , dynamic analysis , flexor and extensor , cp children , opensim