摘要Due to the lack of human avoidance analysis,the orthosis cannot accurately apply orthopedic force during orthopedic,resulting in poor orthopedic effect.Therefore,the relationship between the human body's active avoidance ability and force application is studied to achieve accurate loading of orthopedic force.First,a high-precision scoliosis model was established based on computed tomography data,and the relationship between orthopedic force and Cobb angle was analyzed.Then 9 subjects were selected for avoidance ability test grouped by body mass index calculation,and the avoidance function of different groups was fitted.The avoidance function corrected the application of orthopedic forces.The results show that the optimal correction force calculated by the finite element method was 60 N.The obese group had the largest avoidance ability,followed by the standard group and the lean group.When the orthopedic force was 60 N,the Cobb angle was reduced from 33.77° to 20°,the avoidance ability of the standard group at 50 N obtained from the avoidance function was 20.28％and 10.14 N was actively avoided.Therefore,when 50 N was applied,60.14 N was actually generated,which can achieve the orthopedic effect of 60 N numerical simulation analysis.The avoidance effect can take the active factors of the human body into consideration in the orthopedic process,so as to achieve a more accurate application of orthopedic force,and provide data reference for clinicians in the orthopedic process.