AB0894 A comparison of clinical features in patients with spondyloarthritis and unilateral or bilateral hip arthritis. (12th June 2018)

• Record Type: Journal Article
• Authors: Hamdi, W.; Zrida, S.; Riahi, H.; Maatallah, K.; Kaffel, D.; Chelli Bouaziz, M.; Ladeb, M.F.; Kchir, M.M.
• Is Part Of: Annals of the rheumatic diseases. Volume 77(2018)Supplement 2
• Page Start: 1572
• Page End: 1572
• Publication Date: 2018-06-12
• Subjects: Rheumatism -- Periodicals; 616.723005
• DOI: 10.1136/annrheumdis-2018-eular.6834
• Languages: English
• ISSNs: 0003-4967

Abstract

Abstract : Background: Axial spondyloarthritis (AS) is a frequent chronic and progressive disease that affects mainly young adults and is characterised by inflammation of the axial skeleton, but peripheral joints such as hips may also be involved. The incidence of hip involvement in AS is around 30%. 1 Nevertheless, data concerning clinical features in patients with spondyloarthritis comparing unilateral and bilateral hip arthritis are lacking. Objectives: To compare clinical, functional and radiologic outcomes in patients with AS with unilateral or bilateral hip arthritis. Methods: Cross-sectional study on 100 patients with AS according to the ASAS criteria of 2009 who had unilateral and bilateral hip joint lesions defined by hip pain, limited joint motion and radiographic hip abnormalities. Demographic and clinical outcomes were performed including HLA B27 status. Spinal mobility outcomes were assessed by Schöber index and Bath Ankylosing Spondylitis Metrology Index ( BASMI ). Radiographic measurements were performed and included Bath Ankylosing Spondylitis Radiology Index ( BASRI ) and modified Stoke Ankylosing Spondylitis Spinal Score (mSASSS). Results: Bilateral hip joint lesion was reported in 76% of patients which 14 were women and mean age was 37.14 years. Bilateral hip involvement was associated with less height (p=0.002), more long disease duration (p=0.015), more several clinical spinal involvements with more spinal stiffness (p=0.000) and less spinal mobility (p=0.004). Extra-articular manifestations were comparable in patients with unilateral and bilateral hip arthritis (p=0.55), however HLA B27 antigen was significantly more common (p=0.003) in patients with bilateral hip arthritis. BASRI hip (p=0.042) and mSASSS (p=0.009) scores were used to asses structural damage on plain radiographs and were significantly more important in bilateral involvement. Nevertheless, protrusive form was more frequent in patient with unilateral hip involvement (p=0.05). Conclusions: Bilateral hip arthritis seems to be more frequent and more severe than unilateral involvement in patients with AS. Reference: [1] A. Calin, J. Elswood. The relationship between pelvic, spinal and hip involvement in ankylosing spondylitis: one disease process or several? Br J Rheumatol, 27 (1988), pp. 393–395 Disclosure of Interest: None declared