Evidence map›Paper›PMID 34646895›Full record

ArticleOrthopaedic journal of sports medicine2021

Reliability of Plain Radiographs Versus Magnetic Resonance Imaging to Measure Tibial Slope in Sports Medicine Patients: Can They Be Used Interchangeably?

Ryan Jahn, Joseph D Cooper, Tristan Juhan, Hyunwoo P Kang, Ioanna K Bolia, Seth C Gamradt, George F Hatch, Alexander E Weber

Open access · goldAbstract read
In one paragraph

Article in Orthopaedic journal of sports medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
3.3field-weighted citation impact, top 7% 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

20 citing papers in PubMed, 30 citations in OpenAlex.

  1. Review
  2. Proximal anatomical axes show bidirectional variability: Accurate tibial slope requires mechanical axis measurement.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2026
    Article
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  5. Visual inspection provides precise intraoperative evaluation of tibial slope during unicompartmental knee arthroplasty.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2026
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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

8 authors at 1 institution in 1 country.

Ryan JahnUSC Epstein Family Center for Sports Medicine, Keck Medicine of USC, Los Angeles, California, USA.
Joseph D CooperUSC Epstein Family Center for Sports Medicine, Keck Medicine of USC, Los Angeles, California, USA.
Tristan JuhanUSC Epstein Family Center for Sports Medicine, Keck Medicine of USC, Los Angeles, California, USA.
Hyunwoo P KangUSC Epstein Family Center for Sports Medicine, Keck Medicine of USC, Los Angeles, California, USA.
Ioanna K BoliaUSC Epstein Family Center for Sports Medicine, Keck Medicine of USC, Los Angeles, California, USA.
Seth C GamradtUSC Epstein Family Center for Sports Medicine, Keck Medicine of USC, Los Angeles, California, USA.
George F HatchUSC Epstein Family Center for Sports Medicine, Keck Medicine of USC, Los Angeles, California, USA.
Alexander E WeberUSC Epstein Family Center for Sports Medicine, Keck Medicine of USC, Los Angeles, California, USA.
Keck Hospital of USC · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe slope of the tibial plateau has been proposed as a reason for failure of anterior cruciate ligament reconstruction. PURPOSE: To evaluate the interobserver reliability of measurements of tibial slope on radiographs versus magnetic resonance imaging (MRI) scans and to assess whether the modalities can be used interchangeably for this purpose. STUDY

designCohort study (diagnosis); Level of evidence, 3.

methodsThis retrospective study included 81 patients aged 18 to 30 years who were evaluated in a sports medicine setting for knee pain and who had lateral knee radiographs as well as knee MRI scans on file. Medial and lateral tibial plateau slope measurements were made by 3 blinded reviewers from the radiographs and MRI scans using graphic overlay software. The paired

resultsImaging from 81 patients were included. The average MTPS was significantly larger on radiographs compared with MRI scans (8.7° ± 3.6° vs 3.7° ± 3.4°;

conclusionThe average MTPS and LTPS were significantly larger on radiographs compared with MRI scans. Although tibial slope measurements using radiography and those using MRI are reliable between individuals, the measurements from radiographs and MRI scans cannot be used interchangeably, and caution should be used when interpreting and comparing studies using measurements of the tibial slope.

Indexed as

correlationlateral tibial slopemagnetic resonance imagingmedial tibial sloperadiographyreliability

Identifiers

PMID34646895
PMCPMC8504693
OpenAlexW3204493372

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.