ArticleOsteoarthritis and cartilage open2026
Progression and influencing factors of knee osteoarthritis based on a multi-state Markov model: Data from OAI.
Article in Osteoarthritis and cartilage open, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 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
2 citing papers in PubMed.
- Chair stand performance and symptomatic knee osteoarthritis onset: a prospective cohort study.Rheumatology international · 2026Article
- H-WaveMedicina (Kaunas, Lithuania) · 2025Observational
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8 authors.
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Abstract
Background: Knee osteoarthritis (KOA) is a chronic disorder marked by progressive cartilage loss and functional decline. Current classifications miss bidirectional transitions, particularly in early and late stages, hindering early intervention. Methods: Participants aged 45-79 years from the Osteoarthritis Initiative (OAI) were analyzed over eight years, classifying KOA states as normal, early-KOA, radiographic KOA (rKOA), and end-stage KOA (es-KOA) using Kellgren-Lawrence (K-L) grades, symptoms, and patient-reported outcomes. A Multi-state Markov (MSM) model evaluated state transitions and risk factors. Results: The study comprised 2043 individuals (55.0 % female, 85.9 % White) with a total of 13,997 records of KOA state assessment. Of the individuals currently classified as early-KOA, 34.0 % returned to normal state, 60.9 % remained in early-KOA, and 5.1 % progressed to rKOA or es-KOA at next follow-up. The transition intensity from early-KOA to rKOA (0.05, 95 % CI: 0.04-0.06) was 2.6 times greater than that from normal to rKOA (0.02, 95 % CI: 0.01-0.02). The longest sojourn time was observed in rKOA, with a mean of 15.17 years. In covariate analysis, progression risk increased with obesity (HR: 2.57, Normal to rKOA), poor contralateral knee condition (HR: 3.68, Normal to rKOA), and depressive symptoms (HR: 2.16, rKOA to es-KOA). Better physical function reduced risk (HR: 0.65, Normal to early-KOA). Conclusion: This study reveals dynamic KOA transitions, with early-KOA and es-KOA showing recovery potential. Identifying risk factors like obesity and contralateral knee condition offers opportunities for targeted interventions to slow progression and improve joint health, emphasizing early management's role in KOA care.
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