Serum Urate Levels Alter the Spatial Distribution of Urate Crystals in Synovium and Correlate With Synovitis and Pain in Non‐Gout Female Patients With Anteromedial Knee Osteoarthritis
Authors' conclusion
Spatial urate crystal distribution in the synovium was altered when SUA levels were elevated. Elevated SUA levels were also associated with aggravated synovitis and pain.
Study context
- Population
- Non-gout female patients undergoing knee arthroplasty for anteromedial OA of the knee (anteromedial osteoarthritis (AMOA))
- Outcome
- Spatial distribution of urate crystals in the OA synovium by SUA level; association of SUA with synovitis severity and pain
Methodological detailsprospective enrolment, histological analysis, Spearman rank correlation, multivariable analysis
- Prospective enrolment
- Histological analysis
- Spearman rank correlation
- Multivariable analysis
Main finding
As reported in the abstract
- Pattern of urate crystal deposition in OA synovium significantly altered across serum uric acid (SUA) levels
- Capillary wall, sublining layer and lining cells sequentially affected
- SUA level the only risk factor for high-grade synovitis and severe pain (multivariate analysis)
- SUA positively correlated with UA in synovial fluid and synovium, Krenn histologic score, knee pain and synovial fluid inflammatory cytokines
Observational data: associations, not effects.
Original publication
Serum Urate Levels Alter the Spatial Distribution of Urate Crystals in Synovium and Correlate With Synovitis and Pain in Non‐Gout Female Patients With Anteromedial Knee Osteoarthritis. Arthritis Rheumatol. Published 18 November 2025. doi:10.
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