Evidence map›Paper›PMID 39786204›Full record

ArticleActa orthopaedica2025

Association of patellofemoral osteoarthritis on patient-reported outcomes after medial unicompartmental knee arthroplasty: a retrospective cohort study.

Jonathan Winther Olsen, Christian Bredgaard Jensen, Kristine Ifigenia Bunyoz, Anders Flygenring Bagge, Kirill Gromov, Anders Troelsen

Abstract read
In one paragraph

Article in Acta orthopaedica, 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

6 authors.

Jonathan Winther OlsenClinical Orthopaedic Research Hvidovre, Department of Orthopaedic Surgery, Copenhagen University Hospital Hvidovre, Hvidovre, Denmark. jonathanwintherolsen@gmail.com.
Christian Bredgaard JensenClinical Orthopaedic Research Hvidovre, Department of Orthopaedic Surgery, Copenhagen University Hospital Hvidovre, Hvidovre, Denmark.ORCID 0000-0001-6984-6782
Kristine Ifigenia BunyozClinical Orthopaedic Research Hvidovre, Department of Orthopaedic Surgery, Copenhagen University Hospital Hvidovre, Hvidovre, Denmark.
Anders Flygenring BaggeClinical Orthopaedic Research Hvidovre, Department of Orthopaedic Surgery, Copenhagen University Hospital Hvidovre, Hvidovre, Denmark.
Kirill GromovClinical Orthopaedic Research Hvidovre, Department of Orthopaedic Surgery, Copenhagen University Hospital Hvidovre, Hvidovre, Denmark.ORCID 0000-0002-8114-5193
Anders TroelsenClinical Orthopaedic Research Hvidovre, Department of Orthopaedic Surgery, Copenhagen University Hospital Hvidovre, Hvidovre, Denmark.ORCID 0000-0003-0132-8182

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

background and purposeIn contemporary medial unicompartmental knee arthroplasty (mUKA), non-lateral patellofemoral osteoarthritis (PFOA) is not considered a contraindication. However, we still lack knowledge on the association of PFOA severity on patient reported outcome measures (PROMs) after mUKA. We aimed to examine the association between PFOA severity and PROM-score changes after mUKA.

methodsWe included 549 mobile-bearing mUKAs. PFOA was graded intraoperatively as 0 = normal cartilage, 1-2 = superficial changes or < 50% of depth, and 3-4 = changes of > 50% of depth or to the bone, using the International Cartilage Repair Society (ICRS) cartilage lesion classification system. All patients completed the Oxford Knee Score (OKS), Activity and Participation Questionnaire (APQ), and Forgotten Joint Score (FJS), preoperatively and 3, 12, and 24 months postoperatively. PROM changes were compared using linear regression models adjusted for sex, age, body mass index, and preoperative PROM score.

resultsWe found no significant differences in OKS, FJS, and APQ change when comparing group 3-4 with group 0 at any follow-up. When comparing group 1-2 with 0 we found a statistical but not clinical significantly higher change in OKS scores at 24-month follow-up (2.5, 95% confidence interval [CI] 0.36-4.6) and in APQ scores at 24-month follow-up (10.6, CI 1.2-20.0) in favor of group 1-2.

conclusionSevere PFOA, excluding severe lateral facet PFOA, had no negative association on PROM score development following mobile-bearing mUKA.

Indexed as

Arthroplasty, Replacement, KneeOsteoarthritis, KneePatellofemoral JointPatient Reported Outcome MeasuresAgedFemaleHumansMaleMiddle AgedRetrospective StudiesSeverity of Illness Index

Identifiers

PMID39786204
PMCPMC11714781

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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.