Evidence map›Paper›PMID 39007939›Full record

ArticleInternational orthopaedics2024

When does patient function "Plateau" after total joint arthroplasty? A cohort study.

Seper Ekhtiari, Tanis Worthy, Mitchell J Winemaker, Justin de V Beer, Danielle T Petruccelli, Vikas Khanduja, Mustafa Citak, Laura Puri, Thomas J Wood

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Article in International orthopaedics, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing 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

9 citing papers in PubMed.

  1. Trial
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  5. The trajectory of patient-reported outcomes after hip preservation surgery: A National Registry Study.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2025
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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

9 authors.

Seper EkhtiariDivision of Trauma and Orthopaedic Surgery, Department of Surgery, University of Cambridge, Cambridge, UK.ORCID 0000-0002-4571-9655
Tanis WorthyDivision of Orthopaedic Surgery, Department of Surgery, McMaster University, Hamilton, ON , Canada.ORCID 0000-0002-8752-2228
Mitchell J WinemakerDivision of Orthopaedic Surgery, Department of Surgery, McMaster University, Hamilton, ON , Canada.
Justin de V BeerDivision of Orthopaedic Surgery, Department of Surgery, McMaster University, Hamilton, ON , Canada.ORCID 0000-0001-9479-1656
Danielle T PetruccelliHamilton Arthroplasty Group, Hamilton Health Sciences, Juravinski Hospital, 711 Concession Street B1-12 Hamilton, Ontario, L8V 1C3, Canada.ORCID 0000-0002-9855-2772
Vikas KhandujaDivision of Trauma and Orthopaedic Surgery, Department of Surgery, University of Cambridge, Cambridge, UK.ORCID 0000-0001-9454-3978
Mustafa CitakDepartment of Orthopaedic Surgery, Helios ENDO Klinik Hamburg, Hamburg, Germany.ORCID 0000-0003-3207-7101
Laura PuriHamilton Arthroplasty Group, Hamilton Health Sciences, Juravinski Hospital, 711 Concession Street B1-12 Hamilton, Ontario, L8V 1C3, Canada. puri@hhsc.ca.ORCID 0000-0002-2461-2189
Thomas J WoodDivision of Orthopaedic Surgery, Department of Surgery, McMaster University, Hamilton, ON , Canada.ORCID 0000-0003-0291-444X

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeWith over 100,000 procedures completed per year, hip and knee arthroplasty are two of the most common surgical procedures performed in Canada. There has been literature indicating that patient reported outcome measures (PROM) will start to plateau between six and 12 months. The purpose of this paper was to analyze the trajectory of PROMs following total hip and knee arthroplasty (THA and TKA), as well as assess the impact of any potential confounders on this trajectory. The central research question was: At what point do PROMS plateau among patients that undergo elective THA and TKA?

methodsThis study was a retrospective analysis of data from a prospective database. Patients were eligible if they had undergone an elective, primary THA/TKA with Oxford Scores recorded pre-operatively, and at least at two of the following four time points: six weeks, six months, one year, and two years.

resultsMean pre-operative Oxford scores were 18.0 (7.8) for THA, and 20.1 (7.5) for TKA. For both THA and TKA, there were statistically significant interval improvements in Oxford scores from six weeks [THA: 33.8 (7.9)/TKA: 28.7 (7.8)] to six months [THA: 40.2 (7.3)/TKA: 35.9 (8.3)], and from six months to one year [THA: 41.0 (7.3)/TKA: 37.3 (8.4)], but not from one to two years [THA: 40.0 (8.5)/TKA: 36.4 (9.6)].

conclusionsPatients undergoing either primary THA or TKA can expect clinically meaningful improvements in the first six months after surgery. Beyond this time point, there is a plateau in PROMs. These findings are important for both setting patient expectations in pre-operative discussions, and allowing surgeons to have a realistic understanding of their patients' expected post-operative course.

Indexed as

Arthroplasty, Replacement, HipArthroplasty, Replacement, KneePatient Reported Outcome MeasuresAgedCanadaFemaleHumansMaleMiddle AgedRecovery of FunctionRetrospective StudiesTime FactorsTreatment OutcomeMinimum clinically important differencePatient reported outcome measuresPlateauTotal Joint Arthroplasty

Identifiers

PMID39007939

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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.