Evidence map›Paper›PMID 31786000›Full record

ArticleThe Knee2019

Lateral patellar maltracking due to trochlear dysplasia: A computational study.

S Cyrus Rezvanifar, Brett L Flesher, Kerwyn C Jones, John J Elias

Open access · greenAbstract read
In one paragraph

Article in The Knee, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
1.3field-weighted citation impact, top 21% 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

13 citing papers in PubMed, 27 citations in OpenAlex.

  1. Relationship between patellofemoral morphology and anterior knee pain following tibial intramedullary nailing.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2026
    Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Does contemporary total knee designs replicate the anatomy of the native trochlea?European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2024
    Article
  8. Article
  9. Review
  10. Article
  11. Article
  12. Article
  13. 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

4 authors at 4 institutions in 1 country.

S Cyrus RezvanifarDepartment of Biomedical Engineering, The University of Akron, Akron, OH, USA. Electronic address: rezva006@umn.edu.
Brett L FlesherDepartment of Research, Cleveland Clinic Akron General, Akron, OH, USA.
Kerwyn C JonesDepartment of Orthopedic Surgery, Akron Children's Hospital, Akron, OH, USA.
John J EliasDepartment of Research, Cleveland Clinic Akron General, Akron, OH, USA.
Akron Children's Hospital · USAkron General Medical Center · USCleveland Clinic · USUniversity of Akron · US

Funding

Computational Simulation of Dynamic Motion for Knees with Patellar Instability to Compare MPFL Reconstruction to Tibial Tuberosity Medialization as a Function of Knee AnatomyR21AR069150 · NIAMS · AKRON GENERAL MEDICAL CENTER · PI ELIAS, JOHN J · 2016 to 2017
$316k
NIAMS NIH HHS R21 AR069150
6 · The paper itself

Abstract

backgroundThe study focuses on the influence of trochlear dysplasia on patellar tracking related to patellar instability.

methodsKnee extension against gravity and dual-limb squatting were simulated with seven models representing knees being treated for recurrent instability. Trochlear depth was altered to represent lateral trochlear inclination (LTI) values of 6°, 12° and 24°. Repeated measures analyses compared patellar lateral shift (bisect offset index) across different LTI values. Peak bisect offset index during extension and squatting was correlated with patella alta (Caton-Deschamps index) and maximum lateral position of the tibial tuberosity.

resultsBisect offset index varied significantly (p < 0.05) between different LTI values at multiple flexion angles throughout simulated knee extension and squatting. Average bisect offset values were 1.02, 0.95, and 0.86 for LTI = 6°, 12°, and 24°, respectively, at 0° of flexion for knee extension. The strongest correlation occurred between peak bisect offset index and lateral position of the tibial tuberosity for knee squatting with LTI = 6° (r

conclusionsA shallow trochlear groove increases lateral patellar maltracking. A lateral tibial tuberosity in combination with trochlear dysplasia increases lateral patellar tracking and the risk of patellar instability. Patella alta has relatively little influence on patellar tracking in combination with trochlear dysplasia due to the limited articular constraint provided by the trochlear groove.

Indexed as

AdolescentChildFemaleHumansJoint InstabilityKnee JointMalePatellaPatellar DislocationPatient-Specific ModelingRange of Motion, ArticularTibiaYoung AdultComputational simulationPatellar instabilityPatellar trackingTrochlear dysplasia

Identifiers

PMID31786000
PMCPMC6926151
OpenAlexW2990865722

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.