ArticleThe Journal of rheumatology2022
Geographic Differences in Rates of Primary Total Knee Arthroplasty in Young and Older Adults: A Comparison of 3 US States.
Article in The Journal of rheumatology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
What it found
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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.
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.
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Who cites it
3 citing papers in PubMed.
- Stance-phase kinematic descriptors differentiate clinical subgroups in women with moderate knee osteoarthritis.Frontiers in bioengineering and biotechnology · 2026Article
- Progress in Computer-Assisted Navigation for Total Knee Arthroplasty in Treating Knee Osteoarthritis with Extra-Articular Deformity.Orthopaedic surgery · 2024Review
- Surgeon Volume and Differences in Rates of Primary Total Knee Arthroplasty Across 3 US States.The Journal of rheumatology · 2023Article
Corrections and comments
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Authors and funding
1 author.
Funding
Abstract
objectiveRates of total knee arthroplasty (TKA) among Medicare beneficiaries (adults aged ≥ 65 yrs) vary across the United States, with higher rates in the Midwest and West than in the South. It is not known if a similar variation is present among younger patients, or if findings in Medicare reflect selective postponement of TKA in some regions.
methodsData on all primary TKA performed in adults aged ≥ 20 years in 3 states (Iowa, Utah, and Florida) in 2016 were obtained from state inpatient databases. Rates of TKA were computed based on population census data. Age-, sex-, and race-standardized rates were compared between Iowa and Florida, and between Utah and Florida, among adults aged 20-64 years and adults aged ≥ 65 years.
resultsThere were 10,074, 8954, and 43,908 primary TKAs in Iowa, Utah, and Florida, respectively. Standardized rates were higher in Iowa and Utah than in Florida among both adults aged 20-64 years (Iowa:Florida rate ratio [RR] 1.89, 95% CI 1.79-1.99; Utah:Florida RR 2.31, 95% CI 2.18-2.45) and those aged ≥ 65 years (Iowa:Florida RR 1.41, 95% CI 1.35-1.47; Utah:Florida RR 1.77, 95% CI 1.70-1.85). Results were similar in sensitivity analyses limited to White patients, urban residents, and those with a diagnosis of knee osteoarthritis.
conclusionTKA rates were higher in Iowa and Utah than in Florida among both younger adults and those aged ≥ 65 years, indicating that geographic differences are not specific to elderly patients.
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