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  • Title: [CORRELATION OF LUMBAR FACET JOINT DEGENERATION AND SPINE-PELVIC SAGITTAL BALANCE].
    Author: Lo X, Zhang B, Liu Y, Dai M.
    Journal: Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi; 2015 Aug; 29(8):964-8. PubMed ID: 26677617.
    Abstract:
    OBJECTIVE: To investigate the relationship between lumbar facet joint degeneration of each segment and spine-pelvic sagittal balance parameters. METHODS: A retrospective analysis was made the clinical data of 120 patients with lumbar degenerative disease, who accorded with the inclusion criteria between June and November 2014. There were 58 males and 62 females with an average age of 53 years (range, 24-77 years). The disease duration ranged from 3 to 96 months (mean, 6.6 months). Affected segments included L3,4 in 32 cases, L4,5 in 47 cases, and L5, S1 in 52 cases. The CT and X-ray films of the lumbar vertebrae were taken. The facet joint degeneration was graded based on the grading system of Pathria. The spine-pelvic sagittal balance parameters were measured, including lumbar lordosis (LL), upper lumbar lordosis (ULL), lower lumbar lordosis (LLL), pelvic incidence (PI), pelvic tilt (PT), and sacral slope (SS). According to normal range of PI, the patients were divided into 3 groups: group A (PI was less than normal range), group B (PI was within normal range), and group C (PI was more than normal range). The facet joint degeneration was compared; according to the facet joint degeneration degree, the patients were divided into group N (mild degeneration group) and group M (serious degeneration group) to observe the relationship of lumbar facet joint degeneration of each segment and spine-pelvic sagittal balance parameters. RESULTS: At L4,5 and L5, S1, facet joint degeneration showed significant difference among groups A, B, and C (P < 0.05), more serious facet joint degeneration was observed in group C; no significant difference was found in facet joint degeneration at L3,4 (P > 0.05). There was no significant difference in the other spine-pelvic sagittal balance parameters between groups N and M at each segment (P > 0.05) except for PT (P < 0.05). CONCLUSION: PI of more than normal range may lead to or aggravate lumbar facet joint degeneration at L4,5 and L5, Si; PT and PI are significantly associated with facet joint degeneration at the lower lumbar spine.
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