Evidence map›Paper›PMID 21445940›Full record

ArticleJournal of orthopaedic research : official publication of the Orthopaedic Research Society2011

Local tissue properties of human osteoarthritic cartilage correlate with magnetic resonance T(1) rho relaxation times.

Simon Y Tang, Richard B Souza, Michael Ries, Paul K Hansma, Tamara Alliston, Xiaojuan Li

Open access · bronzeAbstract read
In one paragraph

Article in Journal of orthopaedic research : official publication of the Orthopaedic Research Society, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 1 pooled it
1.7field-weighted citation impact, top 16% 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

17 citing papers in PubMed, 1 synthesis or guideline pooled it, 31 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. TQuantitative imaging in medicine and surgery · 2019
    Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. Article
  13. Cartilage MRI relaxation times after arthroscopic partial medial meniscectomy reveal localized degeneration.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2015
    Article
  14. Review
  15. Imaging biopsy composition at ACL reconstruction.Orthopedic research and reviews · 2013
    Article
  16. Article
  17. 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

6 authors at 2 institutions in 1 country.

Simon Y TangDepartment of Orthopaedic Surgery, University of California, San Francisco, California, USA.
Richard B Souza
Michael Ries
Paul K Hansma
Tamara Alliston
Xiaojuan Li
University of California, San Francisco · USUniversity of California, Santa Barbara · US

Funding

The mechanistic control of bone quality and joint crosstalk by osteocytesR01DE019284 · NIDCR · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI HERNANDEZ, CHRISTOPHER JOHN · 2009 to 2024
$7.6M
Single-Molecule Pullers with Improved Force ResolutionR01GM065354 · NIGMS · UNIVERSITY OF CALIFORNIA SANTA BARBARA · PI HANSMA, PAUL K · 2002 to 2014
$3.7M
In Vivo Early Detection of Cartilage Degeneration Using High Field MRIK25AR053633 · NIAMS · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI LI, XIAOJUAN · 2006 to 2010
$708k
NMR Spectral Markers of Cartilage Degeneration in OsteoarthritisR21AR056773 · NIAMS · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI LI, XIAOJUAN · 2009 to 2010
$381k
The Role of MMP-13 in the TGF-beta Regulation of Bone Matrix Material PropertiesF32AR059497 · NIAMS · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI TANG, SIMON YUE-CHEONG · 2010 to 2012
$133k
NIAMS NIH HHS F32AR059497NIAMS NIH HHS K25 AR053633NIAMS NIH HHS K25AR053633NIAMS NIH HHS R21 AR056773NIDCR NIH HHS R01 DE019284NIDCR NIH HHS R01DE019284NIGMS NIH HHS R01 GM065354NIGMS NIH HHS R01GM65354PHS HHS R21056773
6 · The paper itself

Abstract

The objective of this study is to examine the local relationship between T(1ρ) relaxation times and the mechanical behavior of human osteoarthritic articular cartilage using high-resolution magnetic resonance imaging (MRI) and local in situ microindentation. Seven human tibial plateaus were obtained from patients who underwent total knee arthroplasty due to severe osteoarthritis (OA). Three to six sites were selected from each sample for visual classification using the ICRS Outerbridge scale (a total of 36 sites). Samples were imaged by MR, and the local distribution of T(1ρ) relaxation times were obtained at these selected sites. The elastic and viscoelastic characteristics of the tissue were quantified nondestructively using dynamic microindentation to measure peak dynamic modulus, energy dissipation, and phase angle. Measured Outerbridge scores, MR T(1ρ) relaxation times, and mechanical properties were highly heterogeneous across each cartilage surface. Site-specific measures of T(1ρ) relaxation times correlated significantly with the phase angle (p < 0.001; R = 0.908), a viscoelastic mechanical behavior of the cartilage. The novel combination of high-resolution MR imaging and microindentation allows the investigation of the local relationship between quantitative MRI and biomechanical properties in highly heterogeneous OA cartilage. These findings suggest that MRI T(1ρ) can provide a functional assessment of articular cartilage.

Indexed as

Arthroplasty, Replacement, KneeBiomechanical PhenomenaCartilage, ArticularElasticityFinite Element AnalysisHumansImage EnhancementImage Interpretation, Computer-AssistedKnee JointMagnetic Resonance ImagingOsteoarthritis, KneeTibia

Identifiers

PMID21445940
PMCPMC4092115
OpenAlexW2147746514

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.