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KMID : 0388720190260040141
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Journal of Korean Society of Spine Surgery
2019 Volume.26 No. 4 p.141 ~ p.150
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Radiologic Comparison of the Sacroiliac Joint Degeneration Following Lumbar or Lumbosacral Fusion
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Yi Je-Min
Nam Woo-Dong
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Abstract
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Study Design: Retrospective study Objectives: To compare the degeneration of sacroiliac joint (SIJ) following lumbar or lumbosacral fusion.
Summary of Literature Review: The SIJ is adjacent to lumbosacral junction and its degeneration can be the potential cause of pain. However, the study addressing SIJ degeneration following lumbar or lumbosacral fusion is very limited.
Materials and Methods: From June 2002 to June 2012, 98 patients who underwent posterior decompression and posterolateral fusion were included in this study. The study group was divided into 2 groups according to the range of fusion. Group A had fusion to L5 and included 34 patients. Group B had fusion to S1 and included 64 patients. We evaluated the five years postoperative radiologic and clinical outcomes retrospectively.
Results: There was no statistically significant difference of bilateral preoperative subchondral sclerosis and osteophytes of the SIJ between group A and group B. However, group B revealed statistically significant subchondral sclerosis and osteophyte formation of the SIJ than group A on every radiographs after postoperative 1 year. In group B, the number of fusion segments and age were statistically positively correlated with the degeneration of the SIJ.
Conclusions: Degeneration of the SIJ revealed more rapid and more severe progression in lumbosacral fusion group than in lumbar fusion group. The number of fusion segments and age were positively correlated with the degeneration of the SIJ in lumbosacral fusion group. Therefore, these facts should be taken into account when performing spinal fusion.
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KEYWORD
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Lumbar degenerative disease, Posterolateral fusion, Sacroiliac joint, Adjacent segment disease
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