ArticleThe Journal of rheumatology2019
Increased Rates of Both Knee and Hip Arthroplasties in Older Patients with Ankylosing Spondylitis.
Article in The Journal of rheumatology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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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.
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Who cites it
7 citing papers in PubMed, 16 citations in OpenAlex.
- Wheelchair to Walking: Quadruple Arthroplasty of Hip and Knee Joints in a Patient with Severe Ankylosing Spondylitis.Journal of orthopaedic case reports · 2026Article
- Article
- Use of Ilizarov technique for bilateral knees flexion contracture in Juvenile-onset ankylosing spondylitis: A case report.World journal of clinical cases · 2023Article
- Observational
- Relation of NSAIDs, DMARDs, and TNF Inhibitors for Ankylosing Spondylitis and Psoriatic Arthritis to Risk of Total Hip and Knee Arthroplasty.The Journal of rheumatology · 2021Article
- Spondyloarthritis is associated with higher healthcare utilization and complication rates after primary total knee or total hip arthroplasty.Clinical rheumatology · 2020Article
- Risk of total knee arthroplasty in young and middle-aged adults with ankylosing spondylitis.Clinical rheumatology · 2018Article
Corrections and comments
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Authors and funding
1 author at 1 institution in 1 country.
Funding
Abstract
objectiveTo determine the risks of primary total hip arthroplasty (THA) and total knee arthroplasty (TKA) in older patients with ankylosing spondylitis (AS).
methodsWe used administrative data from 1999 to 2013 on US Medicare beneficiaries to identify patients (< 75 yrs old) with AS and a comparison group without AS. Rates of primary THA and primary TKA were computed for each group, and standardized for age, sex, and race. We also examined risks of primary TKA among patients with AS by their THA status.
resultsWe analyzed 52,568 patients with AS and 4,617,179 patients without AS. Between 1999 and 2013, the standardized incidence of primary THA in patients with AS doubled from 4.5 per 1000 patient-years (PY) to 9.6 per 1000 PY. Rates of primary TKA were higher in patients with AS than controls in all years. In 2013, the standardized incidence of primary TKA in AS was 12.3 per 1000 PY versus 5.7 per 1000 PY in the comparison group (RR 2.14, 95% CI 1.93-2.38). Rates of primary TKA were twice as high among patients with AS and THA than among those without THA (20.4 vs 10.2 per 1000 PY).
conclusionRates of THA in older patients with AS doubled over recent years, outpacing the increase in the general population. Rates of TKA were also substantially higher in older patients with AS. The increased risk of TKA in AS may be a consequence of damage from knee inflammation, or alterations in lower extremity biomechanics due to hip arthritis.
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