Annular closure device lowers reoperation risk 4 years after lumbar discectomy. D, N., MP, A., LE, M., HP, K., JM, P., C, F., & P, V. Medical devices (Auckland, N.Z.), 12:327-335, 2019. RAYYAN-INCLUSION: "Laia"=>"Included" | RAYYAN-LABELS: Barricaid
Annular closure device lowers reoperation risk 4 years after lumbar discectomy. [link]Paper  abstract   bibtex   
OBJECTIVE: To determine whether implanting an annular closure device (ACD) following a lumbar discectomy procedure in patients with large defects in the annulus fibrosus lowers the risk of reoperation after 4 years. METHODS: In a multicenter randomized trial, patients with large annular defects following single-level lumbar discectomy were intraoperatively randomized to additionally receive an ACD or no treatment (Controls). Clinical and imaging follow-up were performed at routine intervals over 4 years of follow-up. Main outcomes included reoperations at the treated lumbar level, leg pain scores on a visual analog scale, Oswestry Disability Index (ODI), and Physical Component Summary (PCS) and Mental Component Summary (MCS) scores from the SF-36 questionnaire. RESULTS: Among 550 patients (ACD 272, Control 278), the risk of reoperation over 4 years was 14.4% with ACD and 21.1% with Controls (P=0.03). The reduction in reoperation risk with ACD was not significantly influenced by patient age (P=0.51), sex (P=0.34), body mass index (P=0.21), smoking status (P=0.85), level of herniation (P=0.26), leg pain severity at baseline (P=0.90), or ODI at baseline (P=0.54). All patient-reported outcomes improved in each group from baseline to 4 years (all P<0.001). The percentage of patients who achieved the minimal clinically important difference without a reoperation was proportionally higher in the ACD group compared to Controls for leg pain (P=0.07), ODI (P=0.10), PCS (P=0.02), and MCS (P=0.06). CONCLUSION: The addition of a bone-anchored ACD following lumbar discectomy in patients with large post-surgical annular defects reduces the risk of reoperation and provides better long-term pain and disability relief over 4 years compared to lumbar discectomy only.
@article{rayyan-216966807,
  title={Annular closure device lowers reoperation risk 4 years after lumbar discectomy.},
  year={2019},
  journal={Medical devices (Auckland, N.Z.)},
  issn={1179-1470 (Print)},
  volume={12},
  pages={327-335},
  author={Nanda D and Arts MP and Miller LE and Köhler HP and Perrin JM and Flüh C and Vajkoczy P},
  institution={Department of Neurosurgery, Isala Klinieken, Zwolle, the Netherlands.; Department of Neurosurgery, Haaglanden Medical Center Westeinde, The Hague, the Netherlands.; Miller Scientific Consulting, Inc., Asheville, NC, USA.; Department of Neurosurgery, Asklepios Westklinikum Hamburg, Hamburg, Germany.; Department of Neurosurgery, University Clinic Mannheim, Mannheim, Germany.; Department of Neurosurgery, University Medical Center Schleswig-Holstein, Campus Kiel, Kiel, Germany.; Department of Neurosurgery, Charité Universitätsmedizin, Berlin, Germany.},
  url={https://pubmed.ncbi.nlm.nih.gov/31564999/},
  language={eng},
  keywords={Reoperation, Diskectomy},
  abstract={OBJECTIVE: To determine whether implanting an annular closure device (ACD) following a lumbar discectomy procedure in patients with large defects in the annulus fibrosus lowers the risk of reoperation after 4 years. METHODS: In a multicenter randomized trial, patients with large annular defects following single-level lumbar discectomy were intraoperatively randomized to additionally receive an ACD or no treatment (Controls). Clinical and imaging follow-up were performed at routine intervals over 4 years of follow-up. Main outcomes included reoperations at the treated lumbar level, leg pain scores on a visual analog scale, Oswestry Disability Index (ODI), and Physical Component Summary (PCS) and Mental Component Summary (MCS) scores from the SF-36 questionnaire. RESULTS: Among 550 patients (ACD 272, Control 278), the risk of reoperation over 4 years was 14.4% with ACD and 21.1% with Controls (P=0.03). The reduction in reoperation risk with ACD was not significantly influenced by patient age (P=0.51), sex (P=0.34), body mass index (P=0.21), smoking status (P=0.85), level of herniation (P=0.26), leg pain severity at baseline (P=0.90), or ODI at baseline (P=0.54). All patient-reported outcomes improved in each group from baseline to 4 years (all P<0.001). The percentage of patients who achieved the minimal clinically important difference without a reoperation was proportionally higher in the ACD group compared to Controls for leg pain (P=0.07), ODI (P=0.10), PCS (P=0.02), and MCS (P=0.06). CONCLUSION: The addition of a bone-anchored ACD following lumbar discectomy in patients with large post-surgical annular defects reduces the risk of reoperation and provides better long-term pain and disability relief over 4 years compared to lumbar discectomy only.},
  note={ RAYYAN-INCLUSION: {"Laia"=>"Included"} | RAYYAN-LABELS: Barricaid}
}

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