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  • Title: [Analysis of the technical key points and clinical effect of full-endoscopic lumbar annulus fibrosus suture].
    Author: Li ZZ, Cao Z, Zhao HL, Shang WL, Hou SX.
    Journal: Zhongguo Gu Shang; 2020 Jun 25; 33(6):498-504. PubMed ID: 32573151.
    Abstract:
    OBJECTIVE: To introduce the technical key points of lumbar annulus fibrosus suture under full-endoscope and analyze the clinical efficacy of full-endoscopic lumbar discectomy and annulus fibrosus suture. METHODS: A total of 50 patients with non contained lumbar disc herniation treated with full-endoscopic lumbar discectomy and annulus fibrosus suture in our department between January 2018 and November 2018 were included. Full-endoscopic single-stitch suture through transforaminal approach or double-stitch suture through interlaminar approach was selected according to lesion level. The lumbar MRI and CT were reexamined on the second day and 3 months after surgery to evaluate the completeness of the discectomy and the adequacy of nerve decompression respectively. The patients were followed up on the second day, 3 months, 6 months, and 1 year after surgery for pain relief using visual analogue scale (VAS, 100 -point scale). The patients were followed up at 3 months, 6 months, and 1 year postoperatively for the recovery of lumbar spine function using Oswestry Disability Index(ODI). At the 1-year follow-up, the Macnab standard of lumbar spine function was evaluated, and the recovery of nerve root function (sensory, muscular and reflex) was recorded. RESULTS: All operations were successfully completed, of which 27 patients were treated with transforaminal approach(including 8 cases of L3, 4 and 19 cases of L4, 5), and 23 patients(including 11 cases of L4, 5 and 12 cases of L5S1) with interlaminar approach. The average operation time was 43.2 minutes. There were no surgical complications and no recurrence of lumbar disc herniation. Postoperative lumbar MRI and CT examinations of all patients showed that the herniated disc was completely removed and the nerveswere fully decompressed. All patients had significant relief of low back pain and lower extremity radiation pain, and the ODI score improved significantly(P<0.01). At 1 year postoperative follow up, 17 patients got an excellent result, 29 good and 4 fair according to Macnab evaluation system. On the first year after surgery, the sense of damaged nerve roots and muscle strength were significantly restored (P<0.01), but tendon reflexes were not significantly restored (P>0.05). CONCLUSION: Full-endoscopic lumbar discectomy and annulus fibrosus suture are safe and effective techniques for minimally invasive spinal surgery, which can reduce the recurrence rate of lumbar disc herniation after full endoscopic lumbar discectomy.
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