Evidence map›Paper›PMID 34337340›Full record

ArticleJOR spine2021

Development of a standardized histopathology scoring system for human intervertebral disc degeneration: an Orthopaedic Research Society Spine Section Initiative.

Christine L Le Maitre, Chitra L Dahia, Morgan Giers, Svenja Illien-Junger, Claudia Cicione, Dino Samartzis, Gianluca Vadala, Aaron Fields, Jeffrey Lotz

Abstract read
In one paragraph

Article in JOR spine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 papers.

0numbers the graph read from it
0cells of the map it votes in
43citing papers in PubMed
–field-weighted citation impact
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

43 citing papers in PubMed.

  1. Article
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  4. Article
  5. Article
  6. Article
  7. Intervertebral disc degeneration.Nature reviews. Disease primers · 2026
    Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Observational
  14. Variants in the SOX9 transactivation middle domain induce axial skeleton dysplasia and scoliosis.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. Article
  20. Article
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

9 authors.

Christine L Le MaitreBiomolecular Sciences Research Centre Sheffield Hallam University Sheffield UK.ORCID https://orcid.org/0000-0003-4489-7107
Chitra L DahiaOrthopaedic Soft Tissue Research Program Hospital for Special Surgery New York New York USA.ORCID https://orcid.org/0000-0003-3683-9791
Morgan GiersSchool of Chemical, Biological, and Environmental Engineering Oregon State University Corvallis Oregon USA.ORCID https://orcid.org/0000-0002-2247-1167
Svenja Illien-JungerDepartment of Orthopaedics Emory University School of Medicine Atlanta Georgia USA.
Claudia CicioneLaboratory of Regenerative Orthopaedics, Department of Orthopaedic and Trauma Surgery Campus Bio-Medico University of Rome Rome Italy.
Dino SamartzisDepartment of Orthopaedic Surgery Rush University Medical Center Chicago Illinois USA.
Gianluca VadalaLaboratory of Regenerative Orthopaedics, Department of Orthopaedic and Trauma Surgery Campus Bio-Medico University of Rome Rome Italy.ORCID https://orcid.org/0000-0001-7142-1660
Aaron FieldsDepartment of Orthopaedic Surgery University of California at San Francisco San Francisco California USA.
Jeffrey LotzDepartment of Orthopaedic Surgery University of California at San Francisco San Francisco California USA.

Funding

Role of Shh/Brachyury axis in the maintenance of the postnatal intervertebral discR01AR077145 · NIAMS · HOSPITAL FOR SPECIAL SURGERY · PI DAHIA, CHITRA L · 2021 to 2025
$3.0M
A Wnt/Shh signaling loop controls intervertebral disc growth and differentiationR01AR065530 · NIAMS · HOSPITAL FOR SPECIAL SURGERY · PI DAHIA, CHITRA L · 2014 to 2018
$1.9M
Fluorescent StereomicroscopeS10OD026763 · OD · HOSPITAL FOR SPECIAL SURGERY · PI DAHIA, CHITRA L · 2019 to 2019
$60k
NIAMS NIH HHS R01 AR065530NIAMS NIH HHS R01 AR077145NIH HHS S10 OD026763
6 · The paper itself

Abstract

backgroundHistopathological analysis of intervertebral disc (IVD) tissues is a critical domain of back pain research. Identification, description, and classification of attributes that distinguish abnormal tissues form a basis for probing disease mechanisms and conceiving novel therapies. Unfortunately, lack of standardized methods and nomenclature can limit comparisons of results across studies and prevent organizing information into a clear representation of the hierarchical, spatial, and temporal patterns of IVD degeneration. Thus, the following Orthopaedic Research Society (ORS) Spine Section Initiative aimed to develop a standardized histopathology scoring scheme for human IVD degeneration.

methodsGuided by a working group of experts, this prospective process entailed a series of stages that consisted of reviewing and assessing past grading schemes, surveying IVD researchers globally on current practice and recommendations for a new grading system, utilizing expert opinion a taxonomy of histological grading was developed, and validation performed.

resultsA standardized taxonomy was developed, which showed excellent intra-rater reliability for scoring nucleus pulposus (NP), annulus fibrosus (AF), and cartilaginous end plate (CEP) regions (interclass correlation [ICC] > .89). The ability to reliably detect subtle changes varied by IVD region, being poorest in the NP (ICC: .89-.95) where changes at the cellular level were important, vs the AF (ICC: .93-.98), CEP (ICC: .97-.98), and boney end plate (ICC: .96-.99) where matrix and structural changes varied more dramatically with degeneration.

conclusionsThe proposed grading system incorporates more comprehensive descriptions of degenerative features for all the IVD sub-tissues than prior criteria. While there was excellent reliability, our results reinforce the need for improved training, particularly for novice raters. Future evaluation of the proposed system in real-world settings (eg, at the microscope) will be needed to further refine criteria and more fully evaluate utility. This improved taxonomy could aid in the understanding of IVD degeneration phenotypes and their association with back pain.

Indexed as

histopathological scoringhumanintervertebral disc degenerationstandardization

Identifiers

PMID34337340
PMCPMC8313169

What OpenQuestion holds

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LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

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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.