Science and Technology Review Publishing House Mar 6 2026 1. Background： With the increasing aging population, high incidence of chronic diseases, and the growing number of congenital or acquired foot deformities, lower limb dysfunction and abnormal gait problems are becoming increasingly common, posing a significant threat to public health and quality of life. Gait analysis is widely considered a sensitive biomechanical indicator for evaluating lower limb function, disease progression, and