PMID- 32157388 OWN - NLM STAT- MEDLINE DCOM- 20210623 LR - 20210623 IS - 1432-0932 (Electronic) IS - 0940-6719 (Linking) VI - 29 IP - 9 DP - 2020 Sep TI - The influence of endplate (Modic) changes on clinical outcomes in lumbar spinal stenosis surgery: a Swiss prospective multicenter cohort study. PG - 2205-2214 LID - 10.1007/s00586-020-06364-0 [doi] AB - PURPOSE: To investigate if the presence or absence of preoperative endplate Modic changes (MC) is predictive for clinical outcomes in degenerative lumbar spinal stenosis (DLSS) patients undergoing decompression-alone or decompression with instrumented fusion surgery. METHODS: Two hundred five patients were included and categorized into four groups; 102 patients into the decompression-alone group with MCs, 41 patients into the fusion group with MCs, 46 patients into the decompression-alone group without MCs, and 16 patients into the fusion group without MCs. Clinical outcome was quantified with changes in spinal stenosis measure (SSM) symptoms, SSM function, NRS pain, and EQ-5D-3L sum score over time (measured at baseline, 12-, 24-, and 36-month follow-up) and minimal clinically important difference (MCID) in SSM symptoms, SSM function, and NRS pain from baseline to 36-month follow-up. To investigate if possible effects of MCs had been modified or hidden by confounding variables, we used the group LASSO method to search for good prognostic models. RESULTS: There were no obvious differences in any of the clinical outcome measures between groups at baseline. At 12 months, most patients have improved in all outcomes and maintained improved conditions over time (no significant group differences). Between 70 and 90 percent of the patients maintained a clinically important improvement up to 36 months. CONCLUSIONS: Endplate MCs have no significant influence on clinical outcome parameters in patients with lumbar spinal stenosis compared to patients without MCs, independent of the chosen surgical strategy. All patients benefitted from surgical therapy up to 36-month follow-up. These slides can be retrieved under Electronic Supplementary Material. FAU - Ulrich, Nils H AU - Ulrich NH AD - Horten Centre for Patient Oriented Research and Knowledge Transfer, University of Zurich, Zurich, Switzerland. nils.hb.ulrich@gmail.com. AD - University Spine Centre Zurich, Balgrist University Hospital, University of Zurich, Zurich, Switzerland. nils.hb.ulrich@gmail.com. FAU - Burgstaller, Jakob M AU - Burgstaller JM AD - Horten Centre for Patient Oriented Research and Knowledge Transfer, University of Zurich, Zurich, Switzerland. FAU - Gravestock, Isaac AU - Gravestock I AD - Horten Centre for Patient Oriented Research and Knowledge Transfer, University of Zurich, Zurich, Switzerland. FAU - Winklhofer, Sebastian AU - Winklhofer S AD - Institute of Diagnostic and Interventional Radiology, University Hospital Zurich, University of Zurich, Zurich, Switzerland. FAU - Porchet, Francois AU - Porchet F AD - Department of Orthopedics and Neurosurgery, Spine Center, Schulthess Clinic, Zurich, Switzerland. FAU - Pichierri, Giuseppe AU - Pichierri G AD - Horten Centre for Patient Oriented Research and Knowledge Transfer, University of Zurich, Zurich, Switzerland. FAU - Wertli, Maria M AU - Wertli MM AD - Horten Centre for Patient Oriented Research and Knowledge Transfer, University of Zurich, Zurich, Switzerland. AD - Division of General Internal Medicine, Bern University Hospital, Bern University, Bern, Switzerland. FAU - Steurer, Johann AU - Steurer J AD - Horten Centre for Patient Oriented Research and Knowledge Transfer, University of Zurich, Zurich, Switzerland. FAU - Farshad, Mazda AU - Farshad M AD - University Spine Centre Zurich, Balgrist University Hospital, University of Zurich, Zurich, Switzerland. CN - LSOS Study Group LA - eng PT - Journal Article PT - Multicenter Study PT - Research Support, Non-U.S. Gov't DEP - 20200310 PL - Germany TA - Eur Spine J JT - European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society JID - 9301980 SB - IM MH - Decompression, Surgical MH - Humans MH - Lumbar Vertebrae/surgery MH - Prospective Studies MH - *Spinal Fusion MH - *Spinal Stenosis/surgery MH - Switzerland MH - Treatment Outcome OTO - NOTNLM OT - Decompression OT - Degenerative lumbar spinal stenosis OT - Endplate OT - Fusion OT - Modic changes EDAT- 2020/03/12 06:00 MHDA- 2021/06/24 06:00 CRDT- 2020/03/12 06:00 PHST- 2019/10/23 00:00 [received] PHST- 2020/03/03 00:00 [accepted] PHST- 2020/01/26 00:00 [revised] PHST- 2020/03/12 06:00 [pubmed] PHST- 2021/06/24 06:00 [medline] PHST- 2020/03/12 06:00 [entrez] AID - 10.1007/s00586-020-06364-0 [pii] AID - 10.1007/s00586-020-06364-0 [doi] PST - ppublish SO - Eur Spine J. 2020 Sep;29(9):2205-2214. doi: 10.1007/s00586-020-06364-0. Epub 2020 Mar 10.