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  • Title: [Effect of reduction on spino-pelvic parameters in treating high-grade lumbar spondylolisthesis].
    Author: Jiang WY, Xu RM, Ma WH, Zhao LJ, Zhou LJ, Yu L, Li J.
    Journal: Zhongguo Gu Shang; 2014 Sep; 27(9):726-9. PubMed ID: 25571653.
    Abstract:
    OBJECTIVE: To explore the effect of reduction on spino-pelvic balance in treating high-grade lumbar spondylolisthesis. METHODS: From Augest 2008 to Augest 2011, the data of 16 patients with high-grade lumbar spodylolisthesis (Meyerding grade III or more than grade III) underwent reduction treatment through posterior approach were retrospectively analyzed. There were 9 males and 7 females, aged from 24 to 65 years old with an average of 44 years. Preoperative, postoperative at 2 weeks and final follow-up, spino-pelvic parameters of all patients were measured and compared by total legth lateral X-rays, and spino-pelvic parameters included sacral slope (SS), pelvic tilt (PT), pelvic incidence (PI), lumbar lordosis (LL) and sagittal vertical axis (SVA); the informations of intervertebral bone fusion was observed by CT and postoperative complications were recorded; clinical effects were assessed according to clinical Oswestry score (CODI). RESULTS: All patients were followed up from 12 to 24 months with an average of 18 months. Four cases reduced anatomically, 8 cases reduced to grade I .4 cases reduced to grade II. There was statistically significant differences in sacral slope (SS), pelvic tilt (PT), lumbar lordosis angle (LL) and sagittal vertical axis (SVA) between before operation and two weeks after operation (P < 0.05), while pelvic incidence (PI) no statistically significant differences was found between before operation and two weeks after operation (P > 0.05). There was no statistically significant differences in SS, PT, LL, SVA, PI between two weeks after operation and final follow-up (P > 0.05). CODI had decreased from preoperative 36.6 ± 4.2 to 14.7 ± 4.0 at final follow-up (P < 0.05). One year after operation, all patients obtained bone fusion and can find the union of bone trabeculae by three-dimensional reconstruction CT. Three cases occurred transient nerve root pain, and recovered after medicinal treatment. No infection and internal fixation loosening and breakage were found. CONCLUSION: Surgical reduction for high-grade lumbar spondylolisthesis can improve spino-pelvic balance and acquire satisfactory outcomes.
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