J Korean Neurosurg Soc.  2019 Nov;62(6):691-699. 10.3340/jkns.2019.0071.

Efficacy of a Novel Annular Closure Device after Lumbar Discectomy in Korean Patients: A 24-Month Follow-Up of a Randomized Controlled Trial

  • 1Department of Neurosurgery, Ajou University College of Medicine, Suwon, Korea.
  • 2Department of Neurosurgery, Yonsei University College of Medicine, Seoul, Korea.
  • 3Department of Neurosurgery, Hwalkichan Hospital, Goyang, Korea.
  • 4Department of Neurosurgery, Cham Teun Teun Research Institute, Seoul, Korea. jivago91@gmail.com


Lumbar discectomy is an effective treatment for lumbar disc herniation (LDH); however, up to 2-18% of patients with LDH have experienced recurrent disc herniation. The purpose of this study was to evaluate the efficacy of a novel annular closure device (ACD) for preventing LDH recurrence and re-operation compared with that of conventional lumbar discectomy (CLD).
In this prospective randomized controlled trial, we compared CLD with discectomy utilizing the Barricaid® (Intrinsic Therapeutics, Inc., Woburn, MA, USA) ACD. Primary radiologic outcomes included disc height, percentage of preoperative disc height maintained, and re-herniation rates. Additional clinical outcomes included visual analog scale (VAS) scores for back and leg pain, Oswestry Disability Index (ODI) scores, and 12-item short-form health survey (SF-12) quality of life scores. Outcomes were measured at preoperation and at 1 week, 1, 3, 6, 12, and 24 months postoperation.
Sixty patients (30 CLD, 30 ACD) were enrolled in this study. At 24-month follow-up, the disc height in the ACD group was significantly greater than that in the CLD group (11.4±1.5 vs. 10.2±1.2 mm, p=0.006). Re-herniation occurred in one patient in the ACD group versus six patients in the CLD group (χ²=4.04, p=0.044). Back and leg VAS scores, ODI scores, and SF-12 scores improved significantly in both groups compared with preoperative scores in the first 7 days following surgery and remained at significantly improved levels at a 24-month follow-up. However, no statistical difference was found between the two groups.
Lumbar discectomy with the Barricaid® (Intrinsic Therapeutics, Inc.) ACD is more effective at maintaining disc height and preventing re-herniation compared with conventional discectomy. Our results suggest that adoption of ACD in lumbar discectomy can help improve the treatment outcome.


Intervertebral disc disease; Discectomy; Herniated disc; Barricaid

MeSH Terms

Follow-Up Studies*
Health Surveys
Intervertebral Disc Displacement
Prospective Studies
Quality of Life
Treatment Outcome
Visual Analog Scale
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