Non-destructive analysis method for stress and strain of human skeleton muscular tissue based on in-vivo physiological movement

Abstract

The invention relates to a human body skeleton muscle tissue stress-strain nondestructive analysis method based on in-vivo physiological movement. The method is composed of a human body movement capturing and analyzing system, a ground reaction force collecting and analyzing system, a muscle force solving system and a skeleton muscle system stress-strain analyzing system. Firstly, the motion capture system is used for capturing the posture of in-vivo three-dimensional physiological motion of a human body, kinematics data of all joints of the human body are extracted through data processing, then foot ground reaction force during in-vivo physiological motion of the human body is collected and analyzed through the ground reaction force collection and analysis system, and a muscle force solution is obtained through the muscle force solution system. The joint force and the muscle force under the corresponding movement are solved and calculated, and finally kinematics data, dynamics data and the muscle force are input into a skeleton and muscle tissue stress-strain analysis system, so that calculation and analysis of the stress-strain of the skeleton and muscle tissue under the in-vivo physiological movement are realized. According to the invention, nondestructive analysis of the stress and strain of the skeletal muscle tissue of the human body under the physiological movement condition is realized.

Description

technical field [0001] The invention relates to the field of biomechanics, in particular to a method for nondestructive analysis of stress and strain of human skeletal muscle tissue based on in vivo physiological motion. Background technique [0002] The skeletal muscle system is the material basis for organisms to realize various movements, and is the foundation of the interaction of biodynamics. The stress-strain characteristics of skeletal muscle tissue during exercise is one of the main contents of biomechanical research; the stress of human skeletal muscle tissue Strain is closely related to the stress and health status of skeletal muscle tissue. Bone and muscle injury will affect the stress and strain value of skeletal muscle tissue. By analyzing the stress and strain of human skeletal muscle tissue under physiological exercise, we can Helps monitor and predict the health status of bone and muscle tissue, and assist in clinical diagnosis and treatment; at the same time...

AI Technical Summary

Problems solved by technology

At present, most of the muscle force data comes from the muscle force obtained by analyzing the EMG signal. The EMG signal is easily disturbed by external noise during the collection process, and only superficial muscle signals can be collected, so the accuracy and practicability are not ideal. Another way to obtain muscle strength is to obtain muscle strength through ultrasonic testing. Although the muscle strength of all muscles can be obtained, only static muscle strength can be obtained, and the data of the whole process of physiological movement cannot be collected, and it is a combination of It is assumed that the estimation method of muscle stiffness cannot accurately calculate muscle force data; in order to solve the accuracy of muscle force data, scholars have begun to use kinematics and dynamics data to reversely calculate muscle force through modeling and calculation, and obtain Accurate muscle force data as loads and boundary conditions for finite element analysis

[0004] At present, in the finite element analysis method of the musculoskeletal system, the loads applied are static or quasi-static ground reaction force, joint force, joint moment and muscle force, etc. These static or quasi-static loads cannot be used for simulation analysis of the human body The real stress and strain in the process of physiological exercise in vivo; from the above analysis, there is still no simple and reliable method for the non-destructive and accurate analysis of the stress and strain of human skeletal muscle tissue in the physiological exercise in vivo. Method to solve the problem of non-destructive and accurate analysis of stress and strain of human skeletal muscle tissue under physiological exercise

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