Study Of Bone-muscle Modeling And Muscle Force Prediction Method Of Human Upper Limb

With increasing of the number of patients who have movement disorders causedby stroke, many treatments are applied into this area, but scientific theory andguidance is insufficient. During the rehabilitation process, it can provide theoreticalevidence to design the rehabilitation exercise through the muscle analysis andprediction of muscle force by movement data, which can also make the treatmentmore pertinence and efficiency.In this study, depending on the motion characteristics of upper limb, simplifiedmovement model of upper limb was established reasonably. Inverse dynamicsanalysis was made by Lagrangian Kinetic Equation. And then using Anybodyestablished, respectively, all muscle bone-muscle model and the simplifiedbone-muscle model. Two models simulated upper limb movement, so that themuscle force could be calculated, which provided theoretical analysis forrehabilitation.The kinetic data of upper limb movement was collected by usingthree-dimensional motion capture system in the experiment with normal people acting.At the same time, sEMG of pectoralis major, deltoids, biceps, brachial triceps andinfraspinatus was collected by ATM-8. Angle, angle velocity and angular accelerationof elbow and shoulder were computed by processing the kinetic data. The pretreatedsEMG was processed by wavelet decomposition and reconstruction approach. Therelation between the reconstructed sEMG and jointed movement could be figured outby comparing the two kinds of signal, and it could guide the rehabilitation and easethe pain of the patients.Conclusion: Through modeling and simulation analysis, it could be concludedthat the distribution of muscle force in the two models were different, just the forcesof few muscles were similar. And some muscles acted different role in the two models.These could provide theoretical basis and guidance for rehabilitation. By the analysisof sEMG, it could figure out that the reconstructed signal could reflect the joints movement and muscles force of upper limb, which could be applied to the field ofsports medicine and medical.