Evidence map›Paper›PMID 23921323›Full record

ArticleSpine2013

Disc degeneration assessed by quantitative T2* (T2 star) correlated with functional lumbar mechanics.

Arin M Ellingson, Hitesh Mehta, David W Polly, Jutta Ellermann, David J Nuckley

Open access · greenAbstract read
In one paragraph

Article in Spine, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 52 papers.

0numbers the graph read from it
0cells of the map it votes in
52citing papers in PubMed
7.0field-weighted citation impact, top 2% 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

52 citing papers in PubMed, 86 citations in OpenAlex.

  1. Article
  2. Article
  3. Intervertebral disc degeneration.Nature reviews. Disease primers · 2026
    Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. Article
  12. Article
  13. Passive intervertebral restraint is different in patients with treatment-resistant chronic nonspecific low back pain: a retrospective cohort study and control comparison.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
  14. Article
  15. Morphological alterations of lumbar intervertebral discs in patients with adolescent idiopathic scoliosis.The spine journal : official journal of the North American Spine Society · 2024
    Article
  16. Article
  17. Macrophages and Intervertebral Disc Degeneration.International journal of molecular sciences · 2023
    Review
  18. Article
  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

5 authors at 2 institutions in 1 country.

Arin M Ellingson*Department of Biomedical Engineering †Department of Orthopaedic Surgery ‡Department of Radiology, Center for Magnetic Resonance Research §Department of Physical Medicine and Rehabilitation, Musculoskeletal Biomechanics Research Laboratory, University of Minnesota, Minneapolis, MN.
Hitesh Mehta
David W Polly
Jutta Ellermann
David J Nuckley
Resonance Research (United States) · USUniversity of Minnesota · US

Funding

Musculoskeletal Training GrantT32AR050938 · NIAMS · UNIVERSITY OF MINNESOTA TWIN CITIES · PI CLOHISY, DENIS R · 2004 to 2020
$3.0M
NIAMS NIH HHS T32 AR050938
6 · The paper itself

Abstract

STUDY

designExperimental correlation study design to quantify features of disc health, including signal intensity and distinction between the annulus fibrosus and nucleus pulposus, with T2* magnetic resonance imaging (MRI) and correlate with the functional mechanics in corresponding motion segments.

objectiveEstablish the relationship between disc health assessed by quantitative T2* MRI and functional lumbar mechanics. SUMMARY OF BACKGROUND DATA: Degeneration leads to altered biochemistry in the disc, affecting the mechanical competence. Clinical routine MRI sequences are not adequate in detecting early changes in degeneration and fails to correlate with pain or improve patient stratification. Quantitative T2* relaxation time mapping probes biochemical features and may offer more sensitivity in assessing disc degeneration.

methodsCadaveric lumbar spines were imaged using quantitative T2* mapping, as well as conventional T2-weighted MRI sequences. Discs were graded by the Pfirrmann scale, and features of disc health, including signal intensity (T2* intensity area) and distinction between the annulus fibrosus and nucleus pulposus (transition zone slope), were quantified by T2*. Each motion segment was subjected to pure moment bending to determine range of motion (ROM), neutral zone (NZ), and bending stiffness.

resultsT2* intensity area and transition zone slope were significantly correlated with flexion ROM (P = 0.015; P = 0.002), ratio of NZ/ROM (P = 0.010; P = 0.028), and stiffness (P = 0.044; P = 0.026), as well as lateral bending NZ/ROM (P = 0.005; P = 0.010) and stiffness (P = 0.022; P = 0.029). T2* intensity area was also correlated with lateral bending ROM (P = 0.023). Pfirrmann grade was only correlated with lateral bending NZ/ROM (P = 0.001) and stiffness (P = 0.007).

conclusionT2* mapping is a sensitive quantitative method capable of detecting changes associated with disc degeneration. Features of disc health quantified with T2* predicted altered functional mechanics of the lumbar spine better than traditional Pfirrmann grading. This new methodology and analysis technique may enhance the assessment of degeneration and enable greater patient stratification for therapeutic strategies. LEVEL OF EVIDENCE: N/A.

Indexed as

AdultAgedBiomechanical PhenomenaCadaverHumansIntervertebral DiscIntervertebral Disc DegenerationLumbar VertebraeMagnetic Resonance ImagingMiddle AgedRadiographyRange of Motion, ArticularYoung Adult

Identifiers

PMID23921323
PMCPMC3830665
OpenAlexW2074688727

What OpenQuestion holds

Textmetadata
LicenceTDM
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.