POS0573 IMPACT OF JOINT DESTRUCTION IN THE HANDS, THE WRISTS AND THE ANKLES ON THE ULTRASOUND ASSESSMENT AND THE FUNCTIONAL OUTCOMES IN RHEUMATOID ARTHRITIS IN REMISSION

Abstract

Background:Joint destruction is a strong predictive factor for residual synovitis among rheumatoid arthritis (RA) patients in clinical remission. Both of them were associated with functional impairment.Objectives:To assess the ultrasound findings and functional outcomes of RA patients in remission according to the site of joint destruction.Methods:A Cross-sectional study including RA patients in remission DAS28 ESR≤ 2.6 for at least 6 months. A B-mode and power doppler (PD) ultrasound of 42 joints was performed. Synovitis was defined and scored using the combined OMERACT-PDUS (gray scale and power doppler (PD)) scoring system graded from 0 to 3. The health assessment questionnaire (HAQ) and the radiological Sharp score of the wrists, hands and feet were calculated.Results:Thirty-seven patients were included. The sex ratio was 0.37 and the mean age was 54.2 years ± 12.7. The mean disease duration was 8.1 years±5.1. The mean remission duration was 36.5 months ± 32.7. The mean DAS28vs was 2.1 ± 0.5. Rheumatoid factor and anti-citrullinated peptide antibodies were found in 62% and 75% of patients, respectively. The mean HAQ was 0.35 ± 0.38. Bone erosion was found in 81% of patients. In patients with hands and feet erosions (54%), synovitis was found in 90% of cases associated with PD in 70% of cases. The mean total score of synovitis was 7.8 ± 5.4. The mean HAQ was 0.37 ± 0.44. In patients with only erosions in the hands or wrists (18.9%), synovitis was found in 100% of cases associated with PD in 57% of cases. The mean total score of synovitis was 4.5±4.7. The mean HAQ was 0.48 ± 0.34. In patients with only feet erosions (8.1%), synovitis was found in 100% of cases associated with PD in 66.7% of cases. The mean total score of synovitis was 4.6±3.5. The mean HAQ was 0.31 ± 0.26. RA was not erosive in 18.9% of patients. In these patients, synovitis was found in 100% of cases associated with PD in 28.6% of cases. The mean total score of synovitis was 5.6±4.3. The mean HAQ was 0.21 ± 0.23. There is no significant difference between these groups(p>0.05).Conclusion:In RA in remission, PD synovitis and functional incapacity were less frequent in the absence of erosion. PD synovitis was more frequently found in patients with erosions, especially, in the feet. The HAQ was higher in patients with hands erosions.References:[1]Hamamoto Y, Ito H, Furu M, Hashimoto M, Fujii T, Ishikawa M, et al. Serological and Progression Differences of Joint Destruction in the Wrist and the Feet in Rheumatoid Arthritis - A Cross-Sectional Cohort Study. PLoS One. 2015;10(8):e0136611.Disclosure of Interests:None declared