Clinical effect and biomechanical evaluation of Traditional Chinese Medicine Hot Compress Combined with Therapeutic Exercise among Older Adults with Knee Osteoarthritis

Before and after the intervention, the pain of the affected leg was scored by VAS pain scale. Kinematics data and dynamics data are processed and calculated by visual 3D analysis software (c-motion, USA).

Butterworth fourth-order low-pass filter is adopted for filtering, and the cut-off frequencies are 6 Hz and 50 Hz respectively. The knee joint torque was calculated by inverse dynamics method, standardized as the product of weight and height, and the time was 0-100% standardized. The vertical projection position of the centroid on the horizontal plane plus the ratio of the centroid velocity to the factor W0 is defined as the extrapolated center of mass position (CM); The minimum distance from cm to BOS boundary is defined as margin of stability (MOS), which takes into account the comprehensive effects of support surface, centroid position and velocity.