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To provide a new method to estimate the effectiveness of thoracolumbar vertebral finite element model. Methods: A mechanical model of human thoracolumbar vertebrae motion segment was made using three-dimensional finite element method and the stress distribution of vertically compressed thoracolumbar vertebrae was analyzed, meanwhile, 20 patients with burst fracture of thoracolumbar vertebrae were tested by CT to calculated average CT value at ascertained different points of thoracolumbar vertebrae. The calculated results and effective stress at the same position were analyzed with straight line correlation. Results: The stress level of different position of thoracolumbar vertebrae under vertical compressive force was positively correlated with the correlative CT value, and the regressive style, Y= 214.028 + 45.268 X, r= 0.7386 , P< 0.05 (n=8) showed a statistical significance.Conclusions: To study mechanism of thoracolumbar vertebrae injuries under different forces has clinical significance.
To provide a new method to estimate the effectiveness of thoracolumbar vertebral finite element model. A mechanical model of human thoracolumbar vertebrae motion segment was made using three-dimensional finite element method and the stress distribution of forging compressed thoracolumbar vertebrae was analyzed, meanwhile, 20 patients with burst fracture of thoracolumbar vertebrae were tested by CT to calculated average CT value at ascertained different points of thoracolumbar vertebrae. The calculated results and effective stress at the same position were analyzed with straight line correlation. Results: The stress level of different position of thoracolumbar vertebrae under vertical compressive force was positively correlated with the correlative CT value, and the regressive style, Y = 214.028 + 45.268 X, r = 0.7386, P <0.05 (n = 8) showed a statistical significance. of thoracolumbar vertebrae injuries under different forces has c linical significance.