Objectives To study the prevalence of knee and hand osteoarthritis (OA) in Ugro-Finnish populations of Russia.
Methods We examined by cross-sectional epidemiological methods three populations from Russian Ugro-Finnish language family: Erzya (E), Moksha (Mo), Marij (Ma). Using standard questionary we examined 1312 rural residents aged 15 yrs and over (representativit >80%). Knee and hand OA was diagnosed by using ACR criteria. Films were readed using Kellgren-Lawrence scales.
Results 339 from 1312 had knee joint pain. The prevalence of knee OA was 11,2% in E, 12,5% in Mo, 8,1% in Ma in individuals aged over 15 and 14,1%, 23,8%, 14,4% accordingly in individuals aged over 50.
212 from 1312 had hand joint pain. Hand OA was diagnosed in 10,0% E, in 3,7% Mo and in 3,8% Ma. The prevalence of hand OA increased with age: 19,8%, 12,2%, 13,5% accordingly in individuals aged over 60.
Knee and hand OA were more higher among women than men.
Conclusion These data demonstrate that knee and hand OA is widespread in Ugro-Finnish populations especially in individuals aged over 50. The ACR criteria for hand and knee OA may be used in population studies.
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