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| WU Chao,TAN Lun,LIN Xu.Clinical application of the reference model about sagittal curves for the thoracolumbar fracture[J].Chinese Journal of Spine and Spinal Cord,2013,(10):898-904. |
| Clinical application of the reference model about sagittal curves for the thoracolumbar fracture |
| Received:March 29, 2013 Revised:May 08, 2013 |
| English Keywords:Thoracolumbar vertebrae Fracture Sagittal plane curves Reference model |
| Fund:四川省卫生厅科学研究项目（No. 080424） |
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| English Abstract: |
| 【Abstract】 Objective: To evaluate the surgical outcome of reference model about sagittal curves for the thoracolumbar burst fracture. Methods: 312 standing digital X-rays on normal adults were obtained, the sagittal angle by using Cobb method was measured(two vertical lines perpendicular to the lines parallel to the superior endplate of the above vertebra and the superior endplate of the below adjacent vertebral body), the normal reference value of sagittal curves about the thoracic and lumbar spine was developed and the reference model about sagittal plane curves was formed. 126 cases of patients with thoracolumbar burst fracture were divided into control group and observation group. All patients underwent posterior fixation and fusion． The reference model of sagittal curves was applied to restore sagittal curves in observation group, while in control group, the routine surgery was performed. The operation time and blood loss, the number of patients about the ratio of anterior vertebral compression, the sagittal loss angle, the Frankel grades before operation, immediately after operation and at final follow-up were recorded. Results: In control group, the operative time was 138.4±35.3min, intraoperative blood loss was 276.7±40.7ml; while in observer group, it was 105.3±38.9min and 201.5±45.8ml respectively, which showed significant difference between two groups(P<0．05). In postoperative control group, the compression ratio of vertebral anterior column was (80.5±2.7)%, the postoperative loss of sagittal angle was 8.3°±2.7°; in final follow-up the data were (74.2±3.7)%, 11.7°±3.3° respectively; while in observer group, the data were (94.4±2.4)%, 1.1°±0.7°, (93.7±2.5)%, 1.2°±0.9° respectively, Which showed significant difference(P<0.05) at each time points after operation between two groups; there were statistically significant difference at different time points after operation in control group(P<0.05), but no statistical difference in observer group(P>0.05). Between the two groups there were statistically different in recovery of Frankel grade(P<0.05), the recovery of observer group was better than control group. Conclusion: The instrument can restore better vertebral height and sagittal curvature of thoracolumbar spine, which also contribute a better neurologic recovery. |
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