• Chin. J. Traumatol. · Dec 2006

    Effect of posterolateral fusion on thoracolumbar burst fractures.

    • Bang-ping Qian, Yong Qiu, Bin Wang, Yang Yu, and Ze-zhang Zhu.
    • Spinal Service, Gulou Hospital, Medical School of Nanjing University, Nanjing 210008, China. qianbangping@163.com
    • Chin. J. Traumatol. 2006 Dec 1; 9 (6): 349-55.

    ObjectiveTo evaluate the efficacy and significance of posterolateral fusion in preventing failure of short-segment stabilization for the treatment of thoracolumbar burst fractures.MethodsSixty patients with thoracolumbar burst fractures were included in the study. The patients were classified into two groups (n equal to 30 in each group). In Group A, patients were treated in our hospital with short-segment instrumentation via posterolateral fusion with iliac bone. In Group B, patients were treated in other hospital with short-segment fixation without fusion. All cases came to our hospital for reexamination. There were 18 males and 12 females in Group A with a mean age of 42.3 years (range, 24 to 52 years) and 16 males and 14 females in Group B with a mean age of 41.5 years (range, 19 to 54 years). Radiographic (Cobb angle, kyphosis of the vertebral body, and sagittal index) and clinical outcomes (Low Back Outcome Score ) were analyzed after an average follow-up of 16 months.ResultsAfter operation, Cobb angle was reduced from 19.3 degrees to 3.1 degrees in Group A and from 19.1 degrees to 3.3 degrees in Group B (P>0.05). It was 5.9 degrees in Group A and 11. 9 degrees in Group B at the final follow-up (P<0.01). Its average loss of correction was 2.8 degree in Group A and 8.6 degrees in Group B. Average kyphosis of the vertebral body was reduced from 21.3 degrees to 6.2 degrees in Group A and from 21.7 degrees to 7.4 degrees in Group B (P>0.05). It was decreased to 7.9 degrees in Group A and 13.5 degrees in Group B at the final follow-up (P<0.01). Its average loss of correction was 1.7 degrees in Group A and 6.1 degrees in Group B. Sagittal index was reduced from 21.3 degrees to 3.6 degrees in Group A and from 20.5 degrees to 3.8 degrees in Group B (P<0.05). It was decreased to 5.1 degrees in Group A and 9.8 degrees in Group B at the final follow-up (P<0.01). Its average loss was 1.5 degrees in Group A and 6.0 degrees in Group B. In Group A, 73.3% of patients had an excellent result based on Low Back Outcome Score system, while that in Group B was only 43.3%.ConclusionsPosterolateral fusion is an effective measure to prevent implant failure, and decrease loss of correction, posttraumatic kyphosis and neurological deficit during the treatment of thoracolumbar burst fractures. Short-segment fixation of thoracolumbar burst fractures without fusion obviously increases failure rate and it is not an optional procedure.

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