Evidence map›Paper›PMID 23165335›Full record

ArticleJournal of orthopaedic research : official publication of the Orthopaedic Research Society2013

Patellar maltracking is prevalent among patellofemoral pain subjects with patella alta: an upright, weightbearing MRI study.

Saikat Pal, Thor F Besier, Gary S Beaupre, Michael Fredericson, Scott L Delp, Garry E Gold

Open access · greenAbstract read
In one paragraph

Article in Journal of orthopaedic research : official publication of the Orthopaedic Research Society, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers.

0numbers the graph read from it
0cells of the map it votes in
39citing papers in PubMed
4.1field-weighted citation impact, top 6% 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

39 citing papers in PubMed, 88 citations in OpenAlex.

  1. Trial
  2. [Idiopathic anterior knee pain-what is the problem?]Orthopadie (Heidelberg, Germany) · 2026
    Review
  3. Article
  4. Article
  5. Article
  6. Article
  7. High Rates of Abnormal Patellofemoral Morphology in Adolescents With Anterior Knee Pain: A Retrospective Review.HSS journal : the musculoskeletal journal of Hospital for Special Surgery · 2024
    Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. The J-sign and the body mass index determine the disease-specific quality of life in patients with lateral patellar instability.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2022
    Article
  13. Article
  14. Article
  15. Article
  16. Review
  17. Article
  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

6 authors at 3 institutions in 2 countries.

Saikat PalDepartment of Bioengineering, Stanford University James H. Clark Center, Room S-331, 318 Campus Drive, Stanford, California, USA. spal5@stanford.edu
Thor F Besier
Gary S Beaupre
Michael Fredericson
Scott L Delp
Garry E Gold
Stanford University · USUniversity of Auckland · NZVA Palo Alto Health Care System · US

Funding

Physics-based Simulation of Biological Structures(RMI)U54GM072970 · NIGMS · STANFORD UNIVERSITY · PI ALTMAN, RUSS BIAGIO · 2004 to 2013
$33.5M
Advanced MR Imaging of Early OsteoarthritisK24AR062068 · NIAMS · STANFORD UNIVERSITY · PI GOLD, GARRY E · 2012 to 2022
$1.7M
Real-Time MRI and 3D Modeling: Development &ApplicationR01EB005790 · NIBIB · STANFORD UNIVERSITY · PI GOLD, GARRY E · 2005 to 2008
$1.5M
NIAMS NIH HHS K24 AR062068NIBIB NIH HHS EB005790-05NIBIB NIH HHS R01 EB005790NIGMS NIH HHS U54 GM072970
6 · The paper itself

Abstract

The purpose of this study is to determine if patellar maltracking is more prevalent among patellofemoral (PF) pain subjects with patella alta compared to subjects with normal patella height. We imaged 37 PF pain and 15 pain free subjects in an open-configuration magnetic resonance imaging scanner while they stood in a weightbearing posture. We measured patella height using the Caton-Deschamps, Blackburne-Peel, Insall-Salvati, Modified Insall-Salvati, and Patellotrochlear indices, and classified the subjects into patella alta and normal patella height groups. We measured patella tilt and bisect offset from oblique-axial plane images, and classified the subjects into maltracking and normal tracking groups. Patellar maltracking was more prevalent among PF pain subjects with patella alta compared to PF pain subjects with normal patella height (two-tailed Fisher's exact test, p<0.050). Using the Caton-Deschamps index, 67% (8/12) of PF pain subjects with patella alta were maltrackers, whereas only 16% (4/25) of PF pain subjects with normal patella height were maltrackers. Patellofemoral pain subjects classified as maltrackers displayed a greater patella height compared to the pain free and PF pain subjects classified as normal trackers (two-tailed unpaired t-tests with Bonferroni correction, p<0.017). This study adds to our understanding of PF pain in two ways-(1) we demonstrate that patellar maltracking is more prevalent in PF pain subjects with patella alta compared to subjects with normal patella height; and (2) we show greater patella height in PF pain subjects compared to pain free subjects using four indices commonly used in clinics.

Indexed as

AdultArthralgiaBiomechanical PhenomenaFemaleHumansKnee JointMagnetic Resonance ImagingMalePatellaPosturePrevalenceWeight-BearingYoung Adult

Identifiers

PMID23165335
PMCPMC3562698
OpenAlexW2063215009

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.