Gait Characteristics In patients With Ankylosing Spondylitis – a Systematic Review (Preprint)
BACKGROUND Ankylosing spondylitis (AS) is a chronic rheumatic disease which affects the axial skeleton and sacro-iliac joints. By impacting spinal mobility and physical functions, AS could also potentially impair gait. However, while published data are rather sparse, it appears that discrepancies exist regarding AS consequences on gait characteristics, tasks and analysis techniques used to assess gait ability of patients with AS. OBJECTIVE The review questions are twofold: (1) What are the consequences of AS on gait? and (2) How is gait assessed in patients with AS? METHODS Databases were systematically searched to identify studies satisfying the search criteria, using the synonyms of ankylosing spondylitis and gait. Two reviewers extracted from the articles study characteristics, sample descriptions, methods and main results in relation to gait. RESULTS 168 titles were extracted from databases and 17 studies were included in the review. 13 studies (76%) used clinical gait measurements, and 4 (23%) used laboratory gait measurements. Only 6 involved a healthy control group. Gait pattern of patients with AS was more cautious, associated to a decreased pelvic tilt and lower limbs angles in the sagittal plane. Studies used diverse protocols, instructions and parameters when assessing gait in AS patients. CONCLUSIONS Only few studies have assessed gait characteristics in patients with AS. Published data evidence that no consensus exists regarding gait analysis methods for patients with AS. However, published studies are encouraging as they provide us the opportunity to propose guidelines to improve the design and methodology for future studies on gait and AS. CLINICALTRIAL PROSPERO: CRD42018102540 and JMIR Res Protoc doi:10.2196/12470