Three-dimensional gait analysis system according to the principle of biomechanics, through the detection and recording of the human body walking process in a specific time phase trunk and joint movement, muscle activity, the force on the ground, joint moment and work, as well as the plantar pressure distribution and walking in the oxygen consumption of the data, compared with the normal range of reference values, to determine the abnormal key imaging factors and compensatory changes, for clinical diagnosis, clinical The system provides suggestions and references for clinical diagnosis, clinical decision-making and evaluation of treatment effects. The 3D gait analysis system includes a series of advanced equipments such as infrared optical motion capture system, surface electromyography, force measuring table, wearable metabolic monitoring system, etc., which can accurately obtain a series of physical behavioral parameters of the subjects, and is of great significance in the field of gait analysis.
Optical 3D Motion Capture System: The core equipment for measuring patient's gait, which provides continuous real-time feedback by monitoring and tracking the position of specific reflective markers on the target, realizing non-invasive and continuous dynamic measurement, thus accomplishing the motion capture task in gait analysis and obtaining kinematic data.
Three-dimensional Force Measurement Platform: There is a phase in the gait process called the support phase, in which the limbs carry significant forces in three directions on the ground, i.e., vertical, anterior-posterior, and internal-external, and when the body changes its position through the lower limbs on the support side, the magnitude and direction of these forces are changed accordingly. The ground reaction force, moment, and power data in this phase can be effectively obtained by the three-dimensional force platform, and the analysis of these data can help to understand the mechanism of gait and obtain the precise mechanical parameters of abnormal gait.
Surface EMG Analysis System: The Surface EMG Analysis System determines the period and relative strength of muscle function by obtaining the electrical signals from the muscles, and determines the gait abnormality caused by the changes in the time course of muscle activity and the intensity of the movement, which is conducive to making a more accurate judgment of the cause of the gait abnormality.
In addition to these three types of equipment, some gait labs are equipped with plantar pressure distribution and exercise cardiorespiratory testers to provide more comprehensive information for gait analysis.