[An epidemiological study of sacroiliitis among the native inhabitants of Chukotka]. / Epidemiologicheskoe issledovanie sakroileita sredi korennykh zhitelei Chukotki.

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 (33.2%) had low back pain. X-ray of the pelvis was made in 239 of 324 patients. It was found that sacroiliitis incidence in Chukotka natives makes up 11.3%. There were marked differences in sex distribution: in males 17.1%, in females 5.7%, RR = 3.9. Out of Chukotka natives with low back pain 2.5% had ankylosing spondylitis, of patients with sacroiliitis 30%. A prospective study of patients with sacroiliitis recorded development of ankylosing spondylitis in 17% of the cases 4 years after the disease onset.

[The development and testing of diagnostic criteria in psoriatic arthritis]. / Razrabotka i aprobatsiia diagnosticheskikh kriteriev psoriaticheskogo artrita.

The paper is concerned with diagnostic criteria of psoriatic arthritis developed by the expert method. The criteria include 14 signs with the aid of which one can diagnose classical, definite and probable psoriatic arthritis. The sensitivity of the developed diagnostic criteria tried in 108 patients afflicted with psoriatic arthritis constitutes 99.2%, whereas the specificity tested in patients suffering from related diseases (reactive arthritides, ankylosing spondyloarthritis, seronegative rheumatoid arthritis) amounts up to 77.8%.

[The epidemiology of spondylarthropathies among the native inhabitants of Chukotka (Eskimos and Chukchi). 1. The prevalence of spondylarthropathies among the Eskimos and the coast Chukchi]. / Epidemiologiia spondiloartropatii sredi korennykh zhitelei Chukotki (éskimosov i chukhei). Soobshchenie 1. Rasprostranennost' spondiloartropatii sredi éskimosov i beregovykh chukchei.

To establish the prevalence of spondyloarthropathies among the indigenous population of Chukot Peninsula, a one-stage cross-sectional study was made with a direct medical examination of the natives of the two settlements of Eastern Chukot Peninsula: Sireniki and Novo-Chaplino where the main part of Eskimos live. During expedition, 640 natives aged over 6 years lived in both settlements (382 and 258 respectively). 464 persons (72.5%) were examined. Of these, 7 persons (1.5%) were diagnosed to suffer from diseases belonging to the group of spondyloarthropathies: 2 persons (0.4%) had ankylosing spondyloarthritis, 2 (0.4%) Reiter's syndrome, 2 undifferentiated spondyloarthropathies, and 1 juvenile chronic arthritis. Of the 7 patients, 4 were Eskimos, 2 half-breeds and 1 was a Chukchi man. The incidence of ankylosing spondyloarthritis among Eskimos amounted to 0.9%, Reiter's syndrome to 0.5%, and undifferentiated spondyloarthropathies to 0.5%. Thus the one-stage expedition examination of the indigenous population of Chukotka Peninsula (Eskimos and Chukchi) has shown that diseases belonging to the group of spondyloarthropathies are widely prevalent among Eskimos.

[Stomatological manifestations in Sjögren's disease and syndrome]. / Stomatologicheskie proiavleniia bolezni i sindroma Shegrena.

For diagnosis of SS and SD and the detection of early stages of disease one should necessarily take into account the symptom complex of "major" (salivary gland enlargement, xerostomia, exacerbation of parotitis) and "minor" stomatological signs (multiple cervical caries, dry lips, perlèche, mycotic and herpetic stomatitis, lymphadenopathy). The initial, marked and late stages were defined according to a degree of expression of stomatological manifestations. The initial stage prevailed in SS, the late stage in SD. The chief method of examination were sialometry, sialography and minor salivary gland biopsy. Sialography was widely used as a less traumatic diagnostic procedure. In addition to common signs with SD, salivary gland involvement was characterized by changes typical of SS combined with rheumatic disease (sclerosis in sclerodermia, vasculitis in RA and SLE, nuclear pathology in SLE).

[Methods for the instrumental diagnosis and verification of Lyme arthritis]. / Metody instrumental'noi diagnostiki i verifikatsii Laim-artrita.

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. Scintigraphy revealed polyarticular lesions in many cases. Ultrasound investigation has found inflammation and edema of periarticular tissues in the knee, shoulders and hips. The level of antibodies against the causative agent Borrelia (in EIA) was significantly higher in patients with marked signs of inflammation in ultrasound examination. Thus, the combined methods of examination in the diagnosis of Lyme arthritis provide the most complete information.