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Arthrosonography of hip and knee joints in the follow up of juvenile rheumatoid arthritis
Ist Teil von
Annals of the rheumatic diseases, 2003-03, Vol.62 (3), p.242-244
Ort / Verlag
London: BMJ Publishing Group Ltd and European League Against Rheumatism
Erscheinungsjahr
2003
Quelle
MEDLINE
Beschreibungen/Notizen
Objective: To evaluate sensitivity of arthrosonography of hip and knee joints for monitoring disease activity in juvenile rheumatoid arthritis (JRA). Methods: Twenty eight patients with JRA with active disease at entry in 15 hips and 38 knee joints were followed up three times in intervals of 4–6 weeks. Sonographic, clinical, and laboratory findings were documented at the same time in clinically active and inactive disease. As controls of the sonographic variables 10 children without a history of arthritis were examined by ultrasound. Results: In active arthritis of the hip joint 19/31 (61%) examinations showed a pathological widening of the synovial joint space. There was no significant correlation between sonographic and clinical measures of disease activity in coxitis. Marked effusion within the suprapatellar pouch was seen in 87% and thickening of the synovial membrane in 92% of cases of active gonarthritis in patients with JRA. There was a significant difference in the number of patients with joint effusion and in the mean joint effusion between patients with clinically active gonarthritis at entry and inactive arthritis at follow up (p<0.001). In contrast, synovial thickening persisted in about 80% after induction of clinical remission. Conclusion: The data confirm the high sensitivity of arthrosonography in imaging changes in hip and knee joints of patients with JRA. Sonographic effusion of the knee provided the highest correlation with measures of clinical disease activity. Further prospective studies should evaluate whether persistent thickening of the synovial membrane detected by ultrasound in clinically inactive arthritis indicates residual inflammatory activity and an increased risk of relapse.