Joachim Sieper

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The field of spondyloarthritis (SpA) has experienced major progress in the last decade, especially with regard to new treatments, earlier diagnosis, imaging technology and a better definition of outcome parameters for clinical trials. In the present work, the Assessment in SpondyloArthritis international Society (ASAS) provides a comprehensive handbook on(More)
OBJECTIVE To determine the overall prevalence of spondylarthropathy (SpA) among whites. METHODS To screen for SpA symptoms, such as inflammatory back pain (IBP), joint swelling, psoriasis, and uveitis, or a specific family history, questionnaires were mailed to 348 blood donors (174 HLA-B27 positive and 174 HLA-B27 negative). From the responding 273(More)
These include: References http://ard.bmj.com/cgi/content/full/65/suppl_3/iii2#BIBL This article cites 240 articles, 58 of which can be accessed free at: Rapid responses http://ard.bmj.com/cgi/eletter-submit/65/suppl_3/iii2 You can respond to this article at: service Email alerting top right corner of the article Receive free email alerts when new articles(More)
UNLABELLED BACKGROUND Treatment options for patients with ankylosing spondylitis are few. We aimed to assess the effectiveness of infliximab, an antibody to tumour necrosis factor (TNF)-alpha, in treatment of such patients. METHODS In this 12-week placebo-controlled multicentre study, we randomly assigned 35 patients with active ankylosing spondylitis to(More)
OBJECTIVE To develop evidence based recommendations for the management of ankylosing spondylitis (AS) as a combined effort of the 'ASsessment in AS' international working group and the European League Against Rheumatism. METHODS Each of the 22 participants was asked to contribute up to 15 propositions describing key clinical aspects of AS management. A(More)
OBJECTIVES To evaluate various validity aspects of four disease activity scores (ASDAS) for ankylosing spondylitis (AS) in comparison with the Bath Ankylosing Spondylitis Disease Activity Index (BASDAI), its individual components and physician and patient global assessment of disease activity. METHODS The analyses were performed in two cohorts of patients(More)
BACKGROUND Chronic low back pain (LBP), the leading symptom of ankylosing spondylitis (AS) and undifferentiated axial spondyloarthritis (SpA), precedes the development of radiographic sacroiliitis, sometimes by many years. OBJECTIVE To assign disease probabilities and to develop an algorithm to help in the early diagnosis of axial SpA. METHODS Axial SpA(More)
OBJECTIVES To develop a new index for disease activity in ankylosing spondylitis (ASDAS) that is truthful, discriminative and feasible, and includes domains/items that are considered relevant by patients and doctors. METHODS Eleven candidate variables covering six domains of disease activity, selected by ASAS experts in a Delphi exercise, were tested in a(More)
This first update of the ASAS/EULAR recommendations on the management of ankylosing spondylitis (AS) is based on the original paper, a systematic review of existing recommendations and the literature since 2005 and the discussion and agreement among 21 international experts, 2 patients and 2 physiotherapists in a meeting in February 2010. Each original(More)
OBJECTIVE Ankylosing spondylitis (AS) is diagnosed late, because radiographs of the sacroiliac joints often do not show definite sacroiliitis at the time of disease onset. The aim of this study was to investigate whether patients without definite radiographically defined sacroiliitis, referred to as nonradiographic axial spondylarthritis (SpA), are(More)