[Aseptic necrosis of the head of the femur in patients with major rheumatic diseases of inflammatory and dystrophic genesis].

A total of 2392 patients treated at the Unit of Rheumatology, Tula Regional Hospital, in 2002 and 2003 were analyzed. Among them, there were 71 patients who were found to have aseptic necrosis of the head of the femur. A statistical analysis of clinical, laboratory, and X-ray data revealed a number of correlations.

Prevalence of rheumatoid arthritis in circumpolar native populations.

Objective: To compare the prevalence of rheumatoid arthritis (RA) in related, but geographically separate, indigenous circumpolar populations.

Methods: Cases were identified by community survey in Russia and by examination of cases located through arthritis registries, a computerized patient information database, and query of local health care providers in Alaska. All possible cases were verified by examination and application of the American College of Rheumatology 1987 criteria.

[An epidemiological study of sacroiliitis among the native inhabitants of Chukotka].

For determination of sacroiliitis frequency among natives of Chukotka peninsula a cross-over epidemiological study was conducted. A total of 975 subjects aged 6 years and older were examined. 324 of them (33.

[Methods for the instrumental diagnosis and verification of Lyme arthritis].

We used instrumental methods to characterise Lyme arthropathy in 79 patients with joint involvement and history of Lyme borreliosis. All of them had arthralgia and 45 of them also had arthritis. Radiological examination has established subchondral bone sclerosis in sacroiliac joints in 68% and sacroiliitis in 29% of the examinees.