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26 January 2020 : Clinical Research  

Needle-Guided Suture Technique for Lumbar Annular Fiber Closure in Microendoscopic Discectomy: A Technical Note and Case Series

Kefeng Luo1ABDE, Kaiwen Cai1BCDEF, Guoqiang Jiang1ACDF*, Bin Lu1ACF, Bing Yue1BC, Jiye Lu1CD, Kai Zhang1BF

DOI: 10.12659/MSM.918619

Med Sci Monit 2020; 26:e918619

Abstract

BACKGROUND: Annular fiber closure techniques have been proven effective in reducing short-term recurrence after discectomy. However, annular fiber closure devices are expensive and still fail at a low rate. We present a novel suture method, needle-guided annular closure suture (NGACS) that does not require a special device and can be performed for annular fiber closure following microendoscopic discectomy.

MATERIAL AND METHODS: Twenty-five patients who underwent treatment with NGACS were reviewed by analysis of the medical records. The clinical outcomes were assessed and compared preoperatively and immediately, 1, 6, and 12 months postoperatively. The parameters included the Visual Analog Scale (VAS)-back and VAS-leg scores and the Oswestry Disability Index (ODI). Midsagittal T2WI images were obtained to evaluate lumbar disc degeneration using the Pfirrmann grade. Additional adverse events were also recorded and tracked.

RESULTS: The VAS-back and VAS-leg scores and the ODI were significantly different at each follow-up time point (P<0.001), and improvements in pain and disability were maintained well during the follow-up period. Lumbar disc reherniation or other serious adverse events were not observed in this series. There was no significant difference between the initial and final Pfirrmann grades (Z=–1.414, P=0.157). The preoperative average disc height was 9.94±1.97 mm, and the disc height at 12 months after surgery was 9.14±1.88 mm. The average decrease in disc height was 8.11±3.36%.

CONCLUSIONS: This study demonstrates the feasibility and superior clinical outcomes of the NGACS technique. This method can be a good substitution when annular fiber closure devices are not available. Moreover, this technique can be easily popularized due to its low cost and few restrictions.

Keywords: Diskectomy, Endoscopes, Suture Techniques, Wound Closure Techniques, Disability Evaluation, Lumbar Vertebrae, Needles, visual analog scale

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Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750