Evidence map›Paper›PMID 41783340›Full record

ArticleArthroplasty today2026

Does Race Affect Utilization of Unicompartmental vs Total Knee Arthroplasty? A Matched Cohort Study Within a Universal Health System.

Aidan M McQuade, Sarah E Rabin, Scott M Feeley, Jefferson L Lansford, Conor F McCarthy, Nora L Watson, Robert W Tracey, John P Cody, Sean E Slaven

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In one paragraph

Article in Arthroplasty today, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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.

Aidan M McQuadeDepartment of Orthopaedic Surgery, Walter Reed National Military Medical Center, Bethesda, MD, USA.
Sarah E RabinDepartment of Orthopaedic Surgery, Walter Reed National Military Medical Center, Bethesda, MD, USA.
Scott M FeeleyDepartment of Orthopaedic Surgery, Walter Reed National Military Medical Center, Bethesda, MD, USA.
Jefferson L LansfordDepartment of Orthopaedic Surgery, Walter Reed National Military Medical Center, Bethesda, MD, USA.
Conor F McCarthyDepartment of Orthopaedic Surgery, Walter Reed National Military Medical Center, Bethesda, MD, USA.
Nora L WatsonDepartment of Research Programs, Walter Reed National Military Medical Center, Bethesda, MD, USA.
Robert W TraceyDepartment of Orthopaedic Surgery, Walter Reed National Military Medical Center, Bethesda, MD, USA.
John P CodyDepartment of Orthopaedic Surgery, Walter Reed National Military Medical Center, Bethesda, MD, USA.
Sean E SlavenDepartment of Orthopaedic Surgery, Walter Reed National Military Medical Center, Bethesda, MD, USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: The purpose of this study was to evaluate racial differences in total knee arthroplasty (TKA) vs unicompartmental knee arthroplasty (UKA) utilization within the Military Health System (MHS). We hypothesized that there would be no racial differences in utilization rates of TKA and UKA within the MHS. Methods: We identified patients who underwent primary knee arthroplasty in the MHS between 2009 and 2024. Patients were matched 1:1 (TKA:UKA) by demographic factors other than race. Osteoarthritis severity was measured on preoperative radiographs using Kellgren-Lawrence grading. Matched pairs were eliminated after radiographic review if the TKA would not have been a radiographic candidate for the corresponding UKA based on Kellgren-Lawrence grade. Conditional logistic regressions were performed to examine the association between race and TKA vs UKA utilization in matched cohorts. Results: We identified 8640 arthroplasties. After demographic matching, minority race was not associated with UKA utilization compared to White race (Black: odds ratio [OR] = 0.86; 95% confidence interval [CI]: 0.63-1.18; non-Black: OR = 0.97; 95% CI: 0.69-1.36). The radiographically matched cohort included 152 TKA patients matched with 152 UKA patients. In this cohort, odds of UKA vs TKA were quantitatively lower for minority race groups vs White race (Black: OR = 0.77; 95% CI: 0.40-1.49; non-Black: OR = 0.61; 95% CI: 0.30-1.26); however, these differences were not statistically significant. Conclusions: There were no statistically significant racial differences in TKA vs UKA utilization among our matched cohort within the universal military healthcare system. Although not significant, there were quantitatively lower odds of UKA in minority race groups, suggesting a need for continued evaluation of utilization trends.

Indexed as

ArthroplastyDisparitiesKneeMatchedUnicompartmental

Identifiers

PMID41783340
PMCPMC12954331

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