Evidence map›Paper›PMID 41522785›Full record

ArticleJournal of experimental orthopaedics2026

Increased tibiofemoral rotation is associated with anatomical risk factors for lateral patella instability.

Julius Watrinet, Lennart Gerdesmeyer, Felix Meurer, Romed P Vieider, Armin Runer, Sebastian Siebenlist, Lukas Willinger

Abstract read
In one paragraph

Article in Journal of experimental orthopaedics, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
–field-weighted citation impact
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

4 citing papers in PubMed.

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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

7 authors.

Julius WatrinetDepartment of Orthopaedic Sports Medicine TUM University Hospital Ismaninger Munich Germany.ORCID https://orcid.org/0000-0003-0578-4142
Lennart GerdesmeyerDepartment of Orthopaedic Sports Medicine TUM University Hospital Ismaninger Munich Germany.
Felix MeurerDepartment of Diagnostic and Interventional Radiology TUM University Hospital Ismaninger Munich Germany.
Romed P VieiderDepartment of Orthopaedic Sports Medicine TUM University Hospital Ismaninger Munich Germany.
Armin RunerDepartment of Orthopaedic Sports Medicine TUM University Hospital Ismaninger Munich Germany.
Sebastian SiebenlistDepartment of Orthopaedic Sports Medicine TUM University Hospital Ismaninger Munich Germany.ORCID https://orcid.org/0009-0005-3193-6869
Lukas WillingerDepartment of Orthopaedic Sports Medicine TUM University Hospital Ismaninger Munich Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Purpose: Chronic patellofemoral instability (PFI) and pain are influenced by axial malalignment of the patellofemoral joint. Tibiofemoral rotation, defined as the rotation between femur and tibia knee, has shown to be correlated to PFI. This study aimed to determine whether tibiofemoral rotation is associated with anatomical risk factors for patellofemoral maltracking in patients with PFI. It was hypothesised that greater tibiofemoral rotation correlates with other predisposing factors for PFI. Methods: Eighty-five consecutive patients (mean age 22.6 ± 8.9 years; 58 female) with PFI underwent standardised bilateral knee MRI in 0° extension for rotational analysis. Tibiofemoral rotation was measured as the angle between the posterior femoral condylar tangent and posterior tibial plateau tangent on axial images. Ipsilateral and contralateral values along other anatomical patellofemoral risk factors were recorded. One-sample Results: Mean ipsilateral tibiofemoral rotation was 6.9° ± 6.0° (range: -6.5° to 21.6°). Contralateral version averaged 6.4° ± 6.2° with no significant side difference. Absolute side-to-side difference was 3.7° ± 2.7°. Ipsilateral tibiofemoral rotation correlated with the tuberositas tibiae-trochlea groove (TT-TG) and medial posterior cruciate ligament distance (TT-PCL) ( Conclusion: Tibiofemoral rotation showed a significant correlation with anatomical risk factors associated with lateral patellar maltracking in patients with PFI. Moreover, patients with PFI demonstrated a wide variability in tibiofemoral rotation. Consideration of tibiofemoral rotation may enhance anatomical assessment and aid clinical decision-making in patients with PFI. Level of Evidence: Level III.

Indexed as

deformityinstabilitypatellarisk factor

Identifiers

PMID41522785
PMCPMC12784099

What OpenQuestion holds

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Registered trials

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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.