Evidence map›Paper›PMID 34930238›Full record

ArticleBMC musculoskeletal disorders2021

Comparison between microendoscopic laminectomy and open posterior decompression surgery for single-level lumbar spinal stenosis: a multicenter retrospective cohort study.

Nozomu Ohtomo, Hideki Nakamoto, Junya Miyahara, Yuichi Yoshida, Hiroyuki Nakarai, Keiichiro Tozawa, Masayoshi Fukushima, So Kato, Toru Doi, Yuki Taniguchi and 7 more

Registry-linked trialOpen access · goldAbstract readMulticenter Study
In one paragraph

Article in BMC musculoskeletal disorders, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07489508 (Retrospective Comparison of Tubular Decompression With or Without Multisegmental Rhizotomy Versus Transfacetal TLIF for the Treatment of Lumbar Spinal Stenosis), which is not on this map. Cited by 9 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 1 pooled it
1.5field-weighted citation impact, top 17% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT07489508 completednot on this map

Retrospective Comparison of Tubular Decompression With or Without Multisegmental Rhizotomy Versus Transfacetal TLIF for the Treatment of Lumbar Spinal Stenosis: A 25-Year Observational Cohort Analysis

Typeobservational_patient_registrySponsorUniversity of ValenciaRan2000 to 2026Enrolled246ConditionsLumbar Spinal Stenosis, Degenerative Lumbar Spondylolisthesis, Neurogenic Claudication
3 · Its place in the literature

Who cites it

9 citing papers in PubMed, 1 synthesis or guideline pooled it, 14 citations in OpenAlex.

  1. Pooled it
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

17 authors at 6 institutions in 1 country.

Nozomu OhtomoDepartment of Orthopaedic Surgery, The University of Tokyo Hospital, 7-3-1Bunkyo-Ku, HongoTokyo, 113-8655, Japan.
Hideki NakamotoDepartment of Orthopaedic Surgery, The University of Tokyo Hospital, 7-3-1Bunkyo-Ku, HongoTokyo, 113-8655, Japan.
Junya MiyaharaDepartment of Orthopaedic Surgery, The University of Tokyo Hospital, 7-3-1Bunkyo-Ku, HongoTokyo, 113-8655, Japan.
Yuichi YoshidaUniversity of Tokyo Spine Group (UTSG), 7-3-1Bunkyo-Ku, HongoTokyo, 113-8655, Japan.
Hiroyuki NakaraiUniversity of Tokyo Spine Group (UTSG), 7-3-1Bunkyo-Ku, HongoTokyo, 113-8655, Japan.
Keiichiro TozawaUniversity of Tokyo Spine Group (UTSG), 7-3-1Bunkyo-Ku, HongoTokyo, 113-8655, Japan.
Masayoshi FukushimaUniversity of Tokyo Spine Group (UTSG), 7-3-1Bunkyo-Ku, HongoTokyo, 113-8655, Japan.
So KatoDepartment of Orthopaedic Surgery, The University of Tokyo Hospital, 7-3-1Bunkyo-Ku, HongoTokyo, 113-8655, Japan.
Toru DoiDepartment of Orthopaedic Surgery, The University of Tokyo Hospital, 7-3-1Bunkyo-Ku, HongoTokyo, 113-8655, Japan.
Yuki TaniguchiDepartment of Orthopaedic Surgery, The University of Tokyo Hospital, 7-3-1Bunkyo-Ku, HongoTokyo, 113-8655, Japan.
Yoshitaka MatsubayashiDepartment of Orthopaedic Surgery, The University of Tokyo Hospital, 7-3-1Bunkyo-Ku, HongoTokyo, 113-8655, Japan.
Akiro HigashikawaUniversity of Tokyo Spine Group (UTSG), 7-3-1Bunkyo-Ku, HongoTokyo, 113-8655, Japan.
Yujiro TakeshitaUniversity of Tokyo Spine Group (UTSG), 7-3-1Bunkyo-Ku, HongoTokyo, 113-8655, Japan.
Naohiro KawamuraUniversity of Tokyo Spine Group (UTSG), 7-3-1Bunkyo-Ku, HongoTokyo, 113-8655, Japan.
Hirohiko InanamiUniversity of Tokyo Spine Group (UTSG), 7-3-1Bunkyo-Ku, HongoTokyo, 113-8655, Japan.
Sakae TanakaDepartment of Orthopaedic Surgery, The University of Tokyo Hospital, 7-3-1Bunkyo-Ku, HongoTokyo, 113-8655, Japan.
Yasushi OshimaDepartment of Orthopaedic Surgery, The University of Tokyo Hospital, 7-3-1Bunkyo-Ku, HongoTokyo, 113-8655, Japan. yoo-tky@umin.ac.jp.
The University of Tokyo · JPUniversity of Tokyo Hospital · JPYokohama Rosai Hospital · JPJapanese Red Cross Medical Center · JPJapan Organization of Occupational Health and Safety · JPYanagawa Rehabilitation Hospital · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundMicroendoscopic laminectomy (MEL), in which a 16-mm tubular retractor with an internal scope is used, has shown excellent surgical results for patients with lumbar spinal canal stenosis. However, no reports have directly compared MEL with open laminectomy. This study aimed to elucidate patient-reported outcomes (PROs) and perioperative complications in patients undergoing MEL versus open laminectomy.

methodsThis is a multicenter retrospective cohort study of prospectively registered patients who underwent lumbar spinal surgery at one of the six high-volume spine centers between April 2017 and September 2018. A total of 258 patients who underwent single posterior lumbar decompression at L4/L5 were enrolled in the study. With regard to demographic data, we prospectively used chart sheets to evaluate the diagnosis, operative procedure, operation time, estimated blood loss, and complications. The follow-up period was 1-year. PROs included a numerical rating scale (NRS) for lower back pain and leg pain, the Oswestry Disability Index (ODI), EuroQol 5 Dimension (EQ-5D), and patient satisfaction with the treatment.

resultsOf the 258 patients enrolled, 252 (97%) completed the 1-year follow-up. Of the 252, 130 underwent MEL (MEL group) and 122 underwent open decompression (open group). The MEL group required a significantly shorter operating time and sustained lesser intraoperative blood loss compared with the open group. The MEL group showed shorter length of postoperative hospitalization than the open group. The overall complication rate was similar (8.2% in the MEL group versus 7.7% in the open group), and the revision rate did not significantly differ. As for PROs, both preoperative and postoperative values did not significantly differ between the two groups. However, the satisfaction rate was higher in the MEL group (74%) than in the open group (53%) (p = 0.02).

conclusionsMEL required a significantly shorter operating time and resulted in lesser intraoperative blood loss compared with laminectomy. Postoperative PROs and complication rates were not significantly different between the procedures, although MEL demonstrated a better satisfaction rate.

Indexed as

Spinal StenosisDecompressionHumansLaminectomyRetrospective StudiesComplicationsMicroendoscopic laminectomyMulticenter retrospective cohort studyPatient-reported outcomes

Identifiers

PMID34930238
PMCPMC8690517
OpenAlexW4225956712

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Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.