Modified Internal Fixation through Anterolateral Approach for Thoracolumbar Burst Fracture to Reestablish the Lumbar Cure

Abstract：Objective To study the methods of modified operation technique through anterolateral approach for thoraco-lumbar burst fracture. Methods There were 103 thoracolumbar burst fractures patients with the complete information. There were 20 patients received traditional anterolateral approach operation,and 25 patients received improved fixation through an-terolateral approach,58 patients received posterior approach operation. The follow-up duration after dischange from the hospital was 1 year. Results The mean preoperative and postoperative lumbar lordosis angle in the traditional anterolateral approach group were( - 14. 75 ± 1. 67)and(5. 63 ± 0. 91)in L2 ,were( - 11. 86 ± 2. 41)and(6. 71 ± 1. 50)in L3 ,were( - 15. 20 ± 1. 92)and(11. 60 ± 1. 14)in L4 . Improved fixation through anterolateral approach group were( - 13. 36 ± 2. 29)and(8. 90 ± 1. 30)in L2 ,were( - 13. 11 ± 2. 57)and(15. 67 ± 1. 58)in L3 ,were( - 13. 40 ± 2. 40)and(22. 60 ± 2. 07)in L4 . Posteri-or group measured were( - 8. 53 ± 2. 08)and(9. 93 ± 2. 27)in L2 ,were( - 9. 39 ± 1. 88)and(16. 33 ± 1. 24)in L3 ,were ( - 10. 90 ± 2. 02)and(23. 70 ± 2. 00)in L4 . Postoperatively,the lumbar lordosis angle of traditional 4 screw group and im-proved 6 screw anterolateral group were significant different(P ﹤ 0. 05),and raditional 4 screw group and posterior group were different(P ﹤ 0. 05),improved 6 screw anterolateral group and posterior group L2 were not significarely different,P = 0. 181;and L3:P = 0. 131 6;L4:P = 0. 351 4. At the 1 year follow-up examination,postoperative L2 lordosis angle in improved 6 screw anterolateral group had been compared,P = 0. 054 3;and L3:0. 178 0,L4:0. 243 3. Conclusion Evaluation of the authors's results shows that angular deformity is more successfully corrected and maintained when the modified fixation through anterolat-eral approach is used.