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Dose preservation of ligament flavum really help prevent postoperative epidural fibrosis and improve outcome in microdiscectomy?

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OBJECTIVE A prospective, randomized, controlled clinical study was conducted with surgery performed by the same surgeon. The aim was to present a new technique for preserving the ligament flavum during… Click to show full abstract

OBJECTIVE A prospective, randomized, controlled clinical study was conducted with surgery performed by the same surgeon. The aim was to present a new technique for preserving the ligament flavum during lumbar microdiscectomy, and to evaluate whether this helps prevent postoperative fibrosis and improve outcome. METHODS From January to December 2017, 251 patients with indication for microdiscectomy were randomly divided into test group using ligament flavum preservation technique and control group using conventional procedures. Visual analogue scale (VAS) scores and Oswestry Disability Index (ODI) were assessed before the surgery, and 3 days, 1 month, 6 months, 1 year and 2 years after the operation respectively. The grade of epidural fibrosis on MRI after 6 months was evaluated by two radiologists independently and double-blindly. RESULTS Both groups' VAS and ODI were significantly improved after surgery, but there was no significant difference between two groups at 3d and 1 month after operation. The grade of epidural fibrosis in test group was significantly lower than that in control group at 6 months postoperative. The VAS and ODI were significantly lower in test group than that in control group at 6 months,1 year and 2 years after operation. CONCLUSION Preservation of more ligament flavum is practicable during the procedure of microdiscectomy. It can prevent postoperative epidural fibrosis, and is helpful to achieve a better clinical outcome.

Keywords: prevent postoperative; fibrosis; epidural fibrosis; group; ligament flavum

Journal Title: Journal of Clinical Neuroscience
Year Published: 2020

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