ACR Meeting Abstracts

ACR Meeting Abstracts

  • Home
  • Meetings Archive
    • 2019 ACR/ARP Annual Meeting
    • 2018 ACR/ARHP Annual Meeting
    • 2017 ACR/ARHP Annual Meeting
    • 2017 ACR/ARHP PRSYM
    • 2016 ACR/ARHP Annual Meeting
    • 2015 ACR/ARHP Annual Meeting
    • 2014 ACR/ARHP Annual Meeting
    • 2013 ACR/ARHP Annual Meeting
    • 2012 ACR/ARHP Annual Meeting
    • 2011 ACR/ARHP Annual Meeting
    • 2010 ACR/ARHP Annual Meeting
    • 2009 ACR/ARHP Annual Meeting
    • Download Abstracts
  • Keyword Index
  • Advanced Search
  • Your Favorites
    • Favorites
    • Login
    • Register
    • View and print all favorites
    • Clear all your favorites
  • Meeting Resource Center

Abstract Number: 647

Validation of a New Electronic Spinal Mobility Index for Patients with Axial Spondyloarthritis Based on Inertial Motion Unit (IMU) Sensors

Philip Gardiner1, Dawn Small2, Eithne Boyle2, Ann Marie Conlon2, José António P. da Silva3, Joan Condell4, Antonio Cuesta-Vargas5, Eduardo Collantes-Estévez6 and Juan Luis Garrido-Castro7, 1Rheumatology, Western Health and Social Care Trust, Londonderry, United Kingdom, 2Western Health and Social Care Trust, Londonderry, United Kingdom, 3Department of rheumatology, Centro Hospitalar e Universitário de Coimbra (SRHUC), Coimbra, Portugal, 4Ulster University, Coleraine, United Kingdom, 5University of Malaga, Malaga, Spain, 6Rheumatology service, IMIBIC/Reina Sofia Hospital/University of Cordoba, Cordoba, Spain, 7IMIBIC, Cordoba, Spain

Meeting: 2018 ACR/ARHP Annual Meeting

Keywords: Ankylosing spondylitis (AS) and range of motion

  • Tweet
  • Email
  • Print
Save to PDF
Session Information

Date: Sunday, October 21, 2018

Session Title: Spondyloarthritis Including Psoriatic Arthritis – Clinical Poster I: Imaging, Clinical Studies, and Treatment

Session Type: ACR Poster Session A

Session Time: 9:00AM-11:00AM

Background/Purpose:  Spinal mobility is a major problem for people with axial spondyloarthritis (axSpA). The BASMI has been widely used for measuring spinal mobility but it lacks responsiveness to change and requires clinical expertise to perform. Inertial Motion Unit (IMU) sensors are now available to measure spinal movement without requiring significant operator expertise. Our objective in this study was to test the reliability of these new tools in patients with axSpA and to develop a composite measurement tool analogous to the BASMI.

Methods: The study included 40 patients with axSpA fulfilling ASAS classification criteria (12 females, 28 males) with a mean age of 48 (27-41). Subjects had a wide range of severity of axSpA. ViMove IMU sensors (DorsaVi©) were used to obtain ROM measurements at the cervical and lumbar spine. Intra-rater and inter-rater reliability of BASMI and IMU tests were assessed by intraclass correlation coefficients (ICC) (two-way model, single measure, absolute agreement) with a 95% CI.

Based on these observations we developed a novel scoring system named ‘IMU-ASMI’. It includes four measurements of maximum ROM (degrees) carried out in both lumbar and cervical regions: flexion, extension, averaged L/R values for lateral flexion and rotation. Maximum spinal ROM values in normal subjects taken from an earlier criterion validity study are taken as reference in the composite IMU-ASMI score calculation..

 

Results:

The mean BASMI was 5.0 (range 0.7 to 8.2, SD 1.9). The mean IMU-ASMI was 5.1 (range 0.4-8.9, SD 2.1). The mean difference between the two scores was 0.04, SD 0.17.

The ICC results demonstrate that a sensor based IMU-ASMI has excellent reliability (table). The R2 on the regression analysis was 0.97, indicating a close relationship between the BASMI and IMU-ASMI (Figure).

 

 

BASMI

IMU-ASMI

ICC (2,1)

95% CI

ICC (2,1)

95% CI

Intra-rater

0.97

0.95-0.99

0.95

0.91-0.96

Inter-rater

0.95

0.91-0.98

0.93

0.85-0.98

Conclusion: IMU sensors can be used to accurately and reliably measure spinal mobility in patients with axSpA. We present a novel IMU-ASMI score based on combining sensor data on spinal mobility including an assessment of lumbar rotation. The score compares favorably with the BASMI linear scale, and the sensor technology on which it is based on will allow tests of spinal mobility to be carried out by non-experts in the community setting. Further studies are planned to test the sensitivity to change of the IMU-ASMI compared to BASMI.

Acknowledgements: This study was funded by FOREUM (www.foreum.org). Physiotherapist Stephanie Keys also performed spinal mobility tests during this study.

 


Disclosure: P. Gardiner, None; D. Small, None; E. Boyle, None; A. M. Conlon, None; J. A. P. da Silva, None; J. Condell, None; A. Cuesta-Vargas, None; E. Collantes-Estévez, None; J. L. Garrido-Castro, None.

To cite this abstract in AMA style:

Gardiner P, Small D, Boyle E, Conlon AM, da Silva JAP, Condell J, Cuesta-Vargas A, Collantes-Estévez E, Garrido-Castro JL. Validation of a New Electronic Spinal Mobility Index for Patients with Axial Spondyloarthritis Based on Inertial Motion Unit (IMU) Sensors [abstract]. Arthritis Rheumatol. 2018; 70 (suppl 10). https://acrabstracts.org/abstract/validation-of-a-new-electronic-spinal-mobility-index-for-patients-with-axial-spondyloarthritis-based-on-inertial-motion-unit-imu-sensors/. Accessed December 10, 2019.
  • Tweet
  • Email
  • Print
Save to PDF

« Back to 2018 ACR/ARHP Annual Meeting

ACR Meeting Abstracts - https://acrabstracts.org/abstract/validation-of-a-new-electronic-spinal-mobility-index-for-patients-with-axial-spondyloarthritis-based-on-inertial-motion-unit-imu-sensors/

Advanced Search

Your Favorites

You can save and print a list of your favorite abstracts by clicking the “Favorite” button at the bottom of any abstract. View your favorites »

Annual Meeting in Atlanta, Georgia

© COPYRIGHT 2019 AMERICAN COLLEGE OF RHEUMATOLOGY

Wiley

  • Home
  • Meetings Archive
  • Advanced Search
  • Meeting Resource Center
  • Online Journal
  • Privacy Policy
  • Permissions Policies
loading Cancel
Post was not sent - check your email addresses!
Email check failed, please try again
Sorry, your blog cannot share posts by email.
This site uses cookies: Find out more.