Evidence map›Paper›PMID 41245736›Full record

ArticleJournal of experimental orthopaedics2025

Femorotibial rotation does not affect clinical outcomes after patellofemoral stabilizing surgery.

Marc Schmid, Giuseppe Loggia, Andreas Flury, Gabriele Cirigliano, Stefan Zimmermann, Lazaros Vlachopoulos, Sandro Hodel, Sandro Fucentese

Abstract read
In one paragraph

Article in Journal of experimental orthopaedics, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing 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

1 citing paper in PubMed.

  1. 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

8 authors.

Marc SchmidDepartment of Orthopedics Balgrist University Hospital University of Zurich Zurich Switzerland.ORCID https://orcid.org/0009-0008-7144-7113
Giuseppe LoggiaDepartment of Orthopedics Balgrist University Hospital University of Zurich Zurich Switzerland.
Andreas FluryDepartment of Orthopedics Balgrist University Hospital University of Zurich Zurich Switzerland.
Gabriele CiriglianoDepartment of Orthopedics Balgrist University Hospital University of Zurich Zurich Switzerland.
Stefan ZimmermannDepartment of Orthopedics Balgrist University Hospital University of Zurich Zurich Switzerland.
Lazaros VlachopoulosDepartment of Orthopedics Balgrist University Hospital University of Zurich Zurich Switzerland.
Sandro HodelDepartment of Orthopedics Balgrist University Hospital University of Zurich Zurich Switzerland.
Sandro FucenteseDepartment of Orthopedics Balgrist University Hospital University of Zurich Zurich Switzerland.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Purpose: The role of femorotibial rotation in patellar instability treatment and prognosis remains unclear. This study examines whether increased femorotibial rotation, indicated by a positive winking sign, affects functional outcomes and recurrent instability after patellofemoral stabilizing surgery. Methods: All patients undergoing patellofemoral instability surgery at our institution (2014-2022) with complete rotational imaging (magnetic resonance imaging/computed tomography [MRI/CT]) and functional assessments (Kujala, Tegner) and at least 1-year follow-up were included. Patients were grouped based on the presence of a radiological winking sign. Surgical treatment was tailored to individual deformities, including medial patellofemoral ligament reconstruction, trochleoplasty, derotational osteotomy and tibial tuberosity osteotomy. Results: A total of 121 knees (114 patients, mean age 23.5 years) with a mean follow-up of 2 years were analyzed. Preoperatively, the winking sign was present in 19.8% ( Conclusion: Patients with increased femorotibial rotation achieve similar functional outcome following patellofemoral stabilizing surgery without increased complications or persistent instability. A tendency for less functional improvement in these patients raises questions about the need to assess femorotibial rotation as an independent deformity. Further research is needed to investigate this topic more deeply. Level of Evidence: Level III.

Indexed as

femorotibial rotationknee rotationpatellar instabilitywinking sign

Identifiers

PMID41245736
PMCPMC12616510

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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.