Evidence map›Paper›PMID 28567591›Full record

ArticleEuropean spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society2017

Ribosomal PCR assay of excised intervertebral discs from patients undergoing single-level primary lumbar microdiscectomy.

Todd F Alamin, Marcus Munoz, Alicia Zagel, Agnes Ith, Eugene Carragee, Ivan Cheng, Gaetano Scuderi, Indre Budvytiene, Niaz Banei

Abstract read
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In one paragraph

Article in 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, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed, 1 pooled it
0.7field-weighted citation impact, top 29% 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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

6 citing papers in PubMed, 1 synthesis or guideline pooled it, 11 citations in OpenAlex.

  1. Evidence for infection in intervertebral disc degeneration: a systematic review.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 · 2022
    Pooled it
  2. Review
  3. Genetic analysis of the causal relationship between gut microbiota and intervertebral disc degeneration: a two-sample Mendelian randomized study.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 · 2024
    Article
  4. A review of microscopy-based evidence for the association of Propionibacterium acnes biofilms in degenerative disc disease and other diseased human tissue.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 · 2019
    Review
  5. The Michel Benoist and Robert Mulholland Yearly European Spine Journal Review: A survey of the "medical" articles in the European Spine Journal, 2018.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 · 2019
    Article
  6. The Michel Benoist and Robert Mulholland yearly European Spine Journal Review : A survey of the "medical" articles in the European Spine Journal, 2017.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 · 2018
    Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors at 2 institutions in 1 country.

Todd F AlaminDepartment of Orthopaedic Surgery, Stanford University School of Medicine, 450 Broadway St, Pavillion A FL 1 MC6110, Redwood City, CA, 94063, USA. tfalamin@stanford.edu.
Marcus MunozDepartment of Orthopaedic Surgery, Stanford University School of Medicine, 450 Broadway St, Pavillion A FL 1 MC6110, Redwood City, CA, 94063, USA.
Alicia ZagelDepartment of Orthopaedic Surgery, Stanford University School of Medicine, 450 Broadway St, Pavillion A FL 1 MC6110, Redwood City, CA, 94063, USA.
Agnes IthDepartment of Orthopaedic Surgery, Stanford University School of Medicine, 450 Broadway St, Pavillion A FL 1 MC6110, Redwood City, CA, 94063, USA.
Eugene CarrageeDepartment of Orthopaedic Surgery, Stanford University School of Medicine, 450 Broadway St, Pavillion A FL 1 MC6110, Redwood City, CA, 94063, USA.
Ivan ChengDepartment of Orthopaedic Surgery, Stanford University School of Medicine, 450 Broadway St, Pavillion A FL 1 MC6110, Redwood City, CA, 94063, USA.
Gaetano ScuderiDepartment of Orthopaedic Surgery, Stanford University School of Medicine, 450 Broadway St, Pavillion A FL 1 MC6110, Redwood City, CA, 94063, USA.
Indre BudvytieneDepartment of Pathology, Stanford University School of Medicine, Stanford, CA, 94305, USA.
Niaz BaneiDepartment of Pathology, Stanford University School of Medicine, Stanford, CA, 94305, USA.
Stanford University · USStanford Health Care · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo determine the presence of infectious microorganisms in the herniated discs of immunocompetent patients, using methodology that we hoped would be of higher sensitivity and specificity than has been reported in the past. Recent studies have demonstrated a significant rate of positive cultures for low virulent organisms in excised HNP samples (range 19-53%). These studies have served as the theoretical basis for a pilot trial, and then, a well done prospective randomized trial that demonstrated that systemic treatment with antibiotics may yield lasting improvements in a subset of patients with axial back pain. Whether the reported positive cultures in discectomy specimens represent true positives is as yet not proven, and critically important if underlying the basis of therapeutic approaches for chronic low back pain.

methodsThis consecutive case series from a single academic center included 44 patients with radiculopathy and MRI findings of lumbar HNP. Patients elected for lumbar microdiscectomy after failure of conservative management. All patients received primary surgery at a single spinal level in the absence of immune compromise. Excised disc material was analyzed with a real-time PCR assay targeting the 16S ribosomal RNA gene followed by amplicon sequencing. No concurrent cultures were performed. Inclusion criteria were as follows: sensory or motor symptoms in a single lumbar nerve distribution; positive physical examination findings including positive straight leg raise test, distributional weakness, and/or a diminished deep tendon reflexes; and magnetic resonance imaging of the lumbar spine positive for HNP in a distribution correlating with the radicular complaint.

resultsThe PCR assay for the 16S rRNA sequence was negative in all 44 patients (100%). 95% CI 0-8%.

conclusionsBased on the data presented here, there does not appear to be a significant underlying rate of bacterial disc infection in immunocompetent patients presenting with radiculopathy from disc herniation.

Indexed as

DiskectomyAdolescentAdultAgedBacterial InfectionsFemaleHumansIntervertebral DiscIntervertebral Disc DisplacementLumbar VertebraeMaleMiddle AgedProspective StudiesReal-Time Polymerase Chain ReactionRNA, BacterialRNA, Ribosomal, 16SRNA, BacterialRNA, Ribosomal, 16S16S rRNABack painDisc herniationDisc infectionPCR

Identifiers

PMID28567591
OpenAlexW2619286749

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.