Variations of sacral slope at the early stage after posterior lumbar interbody fusion and its clinical significance

doi:10.3969/j.issn.2095-4344.2017.15.012

Abstract

Abstract:

BACKGROUND: Loss of sacral slope has been shown to be an important anatomic basis for low back pain. The effect of sacral slope changes after lumbar fusion on pain relief remains unclear.

OBJECTIVE: To analyze the variations of sacral slope and clinical significance at the early stage after posterior lumbar interbody fusion at L_4-5.

METHODS: Sixty patients with herniation at disc levels L_4-5 and spinal stenosis (n=38) or lumbar spondylolisthesis at L₄ (n=22) undergoing posterior lumbar interbody fusion were enrolled. All patients were followed up for 12-24 months to compare the sacral slop at baseline and postoperatively. The clinical outcomes were evaluated by MacNab criteria, and its correlation with age, sex and sacral slop variations was analyzed.

RESULTS AND CONCLUSION: At 12-24 months postoperatively, the sacral slope in the two groups was significantly improved than that at baseline (P < 0.05), but there was no significant difference in sacral slop between two groups (P > 0.05). The age, sex and sacral slop variations showed no significant effects on the early clinical outcomes (P > 0.05). These results suggest that posterior lumbar interbody fusion can markedly improve the sacral slope in patients with spinal stenosis and lumbar spondylolisthesis at early period. Furthermore, age, sex, and sacral slope variations all show no obvious effect on postoperative early functional recovery.

中国组织工程研究杂志出版内容重点：人工关节；骨植入物；脊柱；骨折；内固定；数字化骨科；组织工程

Key words: 骨科植入物, 脊柱植入物, 后路椎体间融合, 腰椎间盘突出, 腰椎管狭窄, 术前, 术后, 腰椎滑脱, 骶骨倾斜角, 疗效, 下腰痛, 国家自然科学基金

CLC Number:

R318

He Ke-yun, Li Zhi-zhong, Hu Zhao-hui. Variations of sacral slope at the early stage after posterior lumbar interbody fusion and its clinical significance [J]. Chinese Journal of Tissue Engineering Research, 2017, 21(15): 2361-2365.

Figures/Tables 2

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