About this trial
This is an observational study using Inertial Measurement Unit (IMU) sensors to measure the effects of biological therapy on spinal mobility and function in axial spondyloarthritis. Participants will undergo MRI scans before and after therapy in parallel to the sensor tests to establish correlation between changes in inflammatory signs and changes in spinal mobility.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Diagnosis of axial spondyloarthritis fulfilling ASAS classification criteria.
Age ≥18 years old and <80 years.
Fulfilment of local criteria for biologic therapy for axSpA.
The subjects should be able to read, write, understand and complete study questionnaires.
Disqualifiers
Safety contra-indication for biologic drug therapy.
Severely restricted hip movement (less than 20 degrees rotation in either hip).
History of previous clinical (symptomatic) vertebral fracture.
History of previous spinal surgery.
Trial population
Patients with active axSpA (BASDAI \>4, Spinal Pain VAS \>4)
Trial design
Cohort
Prospective
Treatments tested in this trial
IMU sensor test
DeviceMeasurement of maximum range of movement in the spine; Ambulatory observational data while performing standardised functional tests
Treatment groups
Trial outcomes
Primary outcomes
Change in composite IMU sensor based metrology index (IMU-ASMI)
Change in AxSpA metrology index based on sensor tests of Range of Movement (i.e. spinal mobility). Scale 0-10, with 10 being severe loss of spinal mobility.
Secondary outcomes
Change in Bath Ankylosing Spondylitis Metrology Index (BASMI)
Change in traditional metrology index of spinal mobility. Scale 0-10, with 10 being severe loss of spinal mobility.
Change in Bath Ankylosing Spondylitis Disease Activity Index (BASDAI)
Change in axSpA disease activity. BASDAI scale 0-10, 10 representing high disease activity
Change in Assessment of Spondyloarthritis International Society Response Criteria (ASAS20)
Change in axSpA disease activity response - 20% improvement is regarded as minimum improvement in at least three of Patient global assessment, Pain assessment, BASFI and Inflammation (last two questions of BASDAI)
Change in modified Stoke Ankylosing Spondylitis Spine Score (mSASSS)
Change in MRI score of inflammation. Range 0-72 the sum of scores for 24 vertebral edges in the lumbar and cervical regions, higher represents more spinal damage.
Sponsors and contacts
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Western Health and Social Care Trust
Lead sponsor
University of Ulster
Collaborator