Evidence map›Paper›PMID 37572139›Full record

ArticleKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2023

High tibial osteotomy versus unicompartmental knee arthroplasty for Kellgren-Lawrence grade 3-4 knee osteoarthritis in younger patients: comparable improvements in patient-reported outcomes, adjusted for osteoarthritis grade and sex.

A Hoorntje, Y Pronk, J M Brinkman, R C I van Geenen, R J van Heerwaarden

Open access · hybridAbstract read
In one paragraph

Article in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
7.6field-weighted citation impact, top 2% 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

18 citing papers in PubMed, 24 citations in OpenAlex.

  1. Clinical outcomes and patient satisfaction following implant removal after open wedge high tibial osteotomy.Asia-Pacific journal of sports medicine, arthroscopy, rehabilitation and technology · 2026
    Article
  2. Review
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  4. Evolving Strategies for Knee Osteoarthritis: A Narrative Review of Integrated Rehabilitation, Pharmacologic, and Joint-Preserving Interventions.Medical science monitor : international medical journal of experimental and clinical research · 2026
    Review
  5. Article
  6. Article
  7. Article
  8. Review
  9. Review
  10. Clinical Outcomes Following Medial Opening Wedge High Tibial Osteotomy in Patients With Medial Compartment Grade 4 Chondromalacia.Journal of the American Academy of Orthopaedic Surgeons. Global research & reviews · 2025
    Article
  11. Medial open wedge high tibial osteotomy is a viable option in young patients with advanced arthritis in a long-term follow-up.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2025
    Article
  12. Article
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  15. Review
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  18. Low central sensitisation inventory score is associated with better post-operative outcomes of osteotomy around the knee.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2023
    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

5 authors at 3 institutions in 1 country.

A HoorntjeDepartment of Orthopaedic Surgery and Sports Medicine, Amsterdam UMC Location University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands. a.hoorntje@amsterdamumc.nl.ORCID http://orcid.org/0000-0002-4268-9526
Y PronkResearch Department, Kliniek ViaSana, Mill, The Netherlands.
J M BrinkmanDepartment of Orthopaedic Surgery, Kliniek ViaSana, Mill, The Netherlands.
R C I van GeenenDepartment of Orthopaedic Surgery, Foundation for Orthopaedic Research Care and Education, Amphia Hospital, Breda, The Netherlands.
R J van HeerwaardenDepartment of Orthopaedic Surgery, Kliniek ViaSana, Mill, The Netherlands.
Kliniek ViaSana · NLAmphia Ziekenhuis · NLGGD Amsterdam · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposePrevious studies comparing high tibial osteotomy (HTO) with unicompartmental knee arthroplasty (UKA) have seldom accounted for differing patient characteristics between both groups. This study compared patient-reported outcomes (PROs) of HTO and UKA patients, adjusted for preoperative PROs, osteoarthritis grade and sex.

methodsA retrospective study was performed analysing prospectively collected PROs, namely the Oxford Knee Score (OKS) and pain/satisfaction scores, collected preoperatively and at 6 months, 12 months and 24 months postoperatively. Consecutive medial opening-wedge HTOs and medial UKAs from 2016-2019, with a preoperative Kellgren-Lawrence grade ≥ 3, aged 50-60 years, were included. Linear mixed model analyses, with the OKS over time as the primary outcome, were used.

resultsWe included 84 HTO patients (mean age 55.0 ± 3.0, 79% male, mean BMI 27.8 ± 3.4, 75% Kellgren-Lawrence grade 3) and 130 UKA patients (mean age 55.7 ± 2.8, 47% male, mean BMI 28.7 ± 4.0, 36% Kellgren-Lawrence grade 3). Response rates were ≥ 87% at all time points. Corrected for preoperative PROs, Kellgren-Lawrence grade and sex, the HTO group had a 2.5 (95% CI 1.0-4.0) points lower OKS over time than the UKA group (p = 0.001). The Numeric Rating Scale scores (NRS; 0-10) for pain at rest and during activity were higher (p < 0.01) in the HTO group. The EQ-5D-descriptive system (p < 0.01), NRS satisfaction (p < 0.01), anchor function and pain scores (p < 0.01) were lower over time in the HTO group.

conclusionUKA patients had better OKS scores, pain and satisfaction scores over time than HTO patients. However, the observed differences were below their established minimal clinically important differences. Therefore, from the patients' perspective, HTO did not appear to be inferior to UKA under the indications outlined in this study. Level of evidence Level IV.

Indexed as

Arthroplasty, Replacement, KneeOsteoarthritis, KneeFemaleHumansKnee JointMaleMiddle AgedOsteotomyPainPatient Reported Outcome MeasuresRetrospective StudiesTibiaTreatment OutcomeHigh tibial osteotomyOsteoarthritisOxford knee scorePatient-reported outcome scoresSatisfactionUnicompartmental knee arthroplasty

Identifiers

PMID37572139
PMCPMC10598142
OpenAlexW4385781158

What OpenQuestion holds

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LicenceCC BY
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.