The new concept of self relative coordinates system was presented. And aparaplegic trunk simplified model was founded according to the correlative clinicalfacts to guide RTG fixing the position in self relative coordinates system.

• 首次提出了自体相对坐标系的概念,并根据临床实际建立了适宜研究的截瘫体干简化力学模型,用以指导 RTG 在自体相对坐标系中的空间定位;