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[Effectiveness of combined treatment of lumbar spondylolisthesis with MED, Quadrant, and Sextant-R systems].

[Effectiveness of combined treatment of lumbar spondylolisthesis with MED, Quadrant, and Sextant-R systems].

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi. 2013 Apr;27(4):399-403

Authors: Kang H, Cai X, Xu F, Huang Y

Abstract
OBJECTIVE: To analyze the effectiveness of combined treatment of lumbar spondylolisthesis with MED, Quadrant, and Sextant-R systems.
METHODS: Between August 2006 and June 2011, 35 patients with lumbar spondylolisthesis were treated, including 11 cases of isthmic spondylolisthesis and 24 cases of degenerative spondylolisthesis. There were 25 males and 10 females, with a mean age of 55 years (range, 33-71 years). The mean disease duration was 37 months (range, 8-75 months). Spondylolisthesis occurred at L4,5 level in 21 patients and at Ls, S1 level in 14 patients. According to Meyerding classification, 35 cases were rated as dergee I. The minimally invasive surgeries were performed by paraspinal muscle approach; Quadrant system was used for decompression and fusion at severe side, MED system for windowing of lamina at mild side, and Sextant-R system for fixation and reduction. Visual analogue scale (VAS) score was used to evaluate pain, Oswestry disability index (ODI) to evaluate clinical outcomes, spondylolishesis ratio and intervertebral height to evaluate spondylolisthesis reduction. RESYKTS: Lumbar continuous thin layer CT at postoperation showed that no pedicle screw invaded spinal canal and intervertebral fusion device was at good position. Incisions healed by first intention. All patients were followed up 18-38 months (mean, 26 months). All patients got bone fusion and had no internal fixation failure by radiologic examination at 1 year after operation. Low back pain was relieved, lumbar function improved obviously, and satisfactory reduction of spondylolisthesis was obtained. At 2 weeks and 1 year after operation, the VAS score, ODI score, spondylolisthesis ratio, and intervertebral height were significantly improved when compared with preoperative ones (P < 0.05). VAS score and ODI score showed significant differences (P < 0.05) between at 2 weeks and 1 year after operation. Spondylolisthesis ratio and intervertebral height showed no significant difference (P > 0.05) between at 2 weeks and at 1 year after operation.
CONCLUSION: Minimally invasive surgical management for lumbar spondylolisthesis via MED, Quadrant, and Sextant-R systems is a safe and effective surgical technique. However, its indications should be well considered.

PMID: 23757863 [PubMed – in process]

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