A New Electronic Spinal Mobility Index For Axial Spondyloarthritis Using Inertial Measurement Unit Sensors

Philip Gardiner, Dawn Small, Pedro Machado, Karla Munoz Esquivel, Joan Condell, Juan Luis Garrido-Castro

Research output: Contribution to conferencePoster

Abstract

Background/Introduction:A key measure for axSpA is spinal mobility, but this is highly variable and subjective when assessed using conventional tools (Mancini and Horak, 2010). Cervical rotation is the only movement test measured in degrees in the BASMI. Inertial Measurement Unit (IMU) sensors can attain accurate measures of body motion. Hence, we evaluated the reliability of IMU attained measurements - from movement tests performed by axSpA participants - against measurements attained from conventional BASMI - the ‘Truth’ dimension of the OMERACT filter (Wells, Beaton, Tugwell, et al., 2014). Material & Methods:Spinal movements were tracked using ViMove IMU sensors from 40 axSpA participants with a wide range of disease severity (mean duration of 13 years). Sensors were set: (1) at the lumbar level (over T12 and S1) and (2) at the cervical level (over occiput and T3) for monitoring back and neck movements respectively. Patient-reported outcomes and conventional metrology were also collected. Intra-rater, inter-rater and test-retest reliability were performed. Lumbar and cervical angles of maximum Range Of Movement (ROM) were attained and analysed using Intraclass Correlation Coefficients. Six values - anterior flexion/extension, lateral flexion and rotation for the lumbar and cervical regions - were employed to calculate a composite score (IMU-ASMI). Pearson correlation coefficients with BASFI were calculated for each component as well as the overall score.Results:IMU measures showed reliable equivalence with the comparable BASMI measurements, correlating closely: Cervical rotation, side flexion, lumbar flexion and cervical flexion with values of r equals to 0.85, 0.84, 0.62 and 0.65 respectively. The correlation between BASMI (mean 4.8, range from 1.2 to 8.4) and IMU-ASMI (mean 4.0, range from 0.1 to 9.3) scores was 0.88. The correlations between “BASFI and BASMI” and “BASFI and IMU-ASMI” were 0.68 and 0.71 respectively. Unforeseen lumbo-pelvic restriction patterns were observed in 15 out of 40 participants. The clinical relevance of IMU sensors tests is giving a detailed overview of movement limitations in degrees by region and movement type.Conclusion:IMU measures showed reliable equivalence with the comparable BASMI measurements. Unforeseen lumbo-pelvic restriction patterns were found. Vi Move IMU sensors were highly reliable in measuring spinal movements.
LanguageEnglish
Publication statusPublished - 11 Sep 2019

Fingerprint

Body Weights and Measures
Lumbosacral Region
Reproducibility of Results
Neck
Patient Reported Outcome Measures

Keywords

  • sensors
  • axial spondyloarthritis
  • IMU
  • accuracy
  • repeatability
  • reliability
  • wearable sensors
  • measures of body motion
  • composite score

Cite this

@conference{78cdfa2c000b48118dee999e03e22894,
title = "A New Electronic Spinal Mobility Index For Axial Spondyloarthritis Using Inertial Measurement Unit Sensors",
abstract = "Background/Introduction:A key measure for axSpA is spinal mobility, but this is highly variable and subjective when assessed using conventional tools (Mancini and Horak, 2010). Cervical rotation is the only movement test measured in degrees in the BASMI. Inertial Measurement Unit (IMU) sensors can attain accurate measures of body motion. Hence, we evaluated the reliability of IMU attained measurements - from movement tests performed by axSpA participants - against measurements attained from conventional BASMI - the ‘Truth’ dimension of the OMERACT filter (Wells, Beaton, Tugwell, et al., 2014). Material & Methods:Spinal movements were tracked using ViMove IMU sensors from 40 axSpA participants with a wide range of disease severity (mean duration of 13 years). Sensors were set: (1) at the lumbar level (over T12 and S1) and (2) at the cervical level (over occiput and T3) for monitoring back and neck movements respectively. Patient-reported outcomes and conventional metrology were also collected. Intra-rater, inter-rater and test-retest reliability were performed. Lumbar and cervical angles of maximum Range Of Movement (ROM) were attained and analysed using Intraclass Correlation Coefficients. Six values - anterior flexion/extension, lateral flexion and rotation for the lumbar and cervical regions - were employed to calculate a composite score (IMU-ASMI). Pearson correlation coefficients with BASFI were calculated for each component as well as the overall score.Results:IMU measures showed reliable equivalence with the comparable BASMI measurements, correlating closely: Cervical rotation, side flexion, lumbar flexion and cervical flexion with values of r equals to 0.85, 0.84, 0.62 and 0.65 respectively. The correlation between BASMI (mean 4.8, range from 1.2 to 8.4) and IMU-ASMI (mean 4.0, range from 0.1 to 9.3) scores was 0.88. The correlations between “BASFI and BASMI” and “BASFI and IMU-ASMI” were 0.68 and 0.71 respectively. Unforeseen lumbo-pelvic restriction patterns were observed in 15 out of 40 participants. The clinical relevance of IMU sensors tests is giving a detailed overview of movement limitations in degrees by region and movement type.Conclusion:IMU measures showed reliable equivalence with the comparable BASMI measurements. Unforeseen lumbo-pelvic restriction patterns were found. Vi Move IMU sensors were highly reliable in measuring spinal movements.",
keywords = "sensors, axial spondyloarthritis, IMU, accuracy, repeatability, reliability, wearable sensors, measures of body motion, composite score",
author = "Philip Gardiner and Dawn Small and Pedro Machado and {Munoz Esquivel}, Karla and Joan Condell and Garrido-Castro, {Juan Luis}",
year = "2019",
month = "9",
day = "11",
language = "English",

}

A New Electronic Spinal Mobility Index For Axial Spondyloarthritis Using Inertial Measurement Unit Sensors. / Gardiner, Philip; Small, Dawn; Machado, Pedro; Munoz Esquivel, Karla; Condell, Joan; Garrido-Castro, Juan Luis.

2019.

Research output: Contribution to conferencePoster

TY - CONF

T1 - A New Electronic Spinal Mobility Index For Axial Spondyloarthritis Using Inertial Measurement Unit Sensors

AU - Gardiner, Philip

AU - Small, Dawn

AU - Machado, Pedro

AU - Munoz Esquivel, Karla

AU - Condell, Joan

AU - Garrido-Castro, Juan Luis

PY - 2019/9/11

Y1 - 2019/9/11

N2 - Background/Introduction:A key measure for axSpA is spinal mobility, but this is highly variable and subjective when assessed using conventional tools (Mancini and Horak, 2010). Cervical rotation is the only movement test measured in degrees in the BASMI. Inertial Measurement Unit (IMU) sensors can attain accurate measures of body motion. Hence, we evaluated the reliability of IMU attained measurements - from movement tests performed by axSpA participants - against measurements attained from conventional BASMI - the ‘Truth’ dimension of the OMERACT filter (Wells, Beaton, Tugwell, et al., 2014). Material & Methods:Spinal movements were tracked using ViMove IMU sensors from 40 axSpA participants with a wide range of disease severity (mean duration of 13 years). Sensors were set: (1) at the lumbar level (over T12 and S1) and (2) at the cervical level (over occiput and T3) for monitoring back and neck movements respectively. Patient-reported outcomes and conventional metrology were also collected. Intra-rater, inter-rater and test-retest reliability were performed. Lumbar and cervical angles of maximum Range Of Movement (ROM) were attained and analysed using Intraclass Correlation Coefficients. Six values - anterior flexion/extension, lateral flexion and rotation for the lumbar and cervical regions - were employed to calculate a composite score (IMU-ASMI). Pearson correlation coefficients with BASFI were calculated for each component as well as the overall score.Results:IMU measures showed reliable equivalence with the comparable BASMI measurements, correlating closely: Cervical rotation, side flexion, lumbar flexion and cervical flexion with values of r equals to 0.85, 0.84, 0.62 and 0.65 respectively. The correlation between BASMI (mean 4.8, range from 1.2 to 8.4) and IMU-ASMI (mean 4.0, range from 0.1 to 9.3) scores was 0.88. The correlations between “BASFI and BASMI” and “BASFI and IMU-ASMI” were 0.68 and 0.71 respectively. Unforeseen lumbo-pelvic restriction patterns were observed in 15 out of 40 participants. The clinical relevance of IMU sensors tests is giving a detailed overview of movement limitations in degrees by region and movement type.Conclusion:IMU measures showed reliable equivalence with the comparable BASMI measurements. Unforeseen lumbo-pelvic restriction patterns were found. Vi Move IMU sensors were highly reliable in measuring spinal movements.

AB - Background/Introduction:A key measure for axSpA is spinal mobility, but this is highly variable and subjective when assessed using conventional tools (Mancini and Horak, 2010). Cervical rotation is the only movement test measured in degrees in the BASMI. Inertial Measurement Unit (IMU) sensors can attain accurate measures of body motion. Hence, we evaluated the reliability of IMU attained measurements - from movement tests performed by axSpA participants - against measurements attained from conventional BASMI - the ‘Truth’ dimension of the OMERACT filter (Wells, Beaton, Tugwell, et al., 2014). Material & Methods:Spinal movements were tracked using ViMove IMU sensors from 40 axSpA participants with a wide range of disease severity (mean duration of 13 years). Sensors were set: (1) at the lumbar level (over T12 and S1) and (2) at the cervical level (over occiput and T3) for monitoring back and neck movements respectively. Patient-reported outcomes and conventional metrology were also collected. Intra-rater, inter-rater and test-retest reliability were performed. Lumbar and cervical angles of maximum Range Of Movement (ROM) were attained and analysed using Intraclass Correlation Coefficients. Six values - anterior flexion/extension, lateral flexion and rotation for the lumbar and cervical regions - were employed to calculate a composite score (IMU-ASMI). Pearson correlation coefficients with BASFI were calculated for each component as well as the overall score.Results:IMU measures showed reliable equivalence with the comparable BASMI measurements, correlating closely: Cervical rotation, side flexion, lumbar flexion and cervical flexion with values of r equals to 0.85, 0.84, 0.62 and 0.65 respectively. The correlation between BASMI (mean 4.8, range from 1.2 to 8.4) and IMU-ASMI (mean 4.0, range from 0.1 to 9.3) scores was 0.88. The correlations between “BASFI and BASMI” and “BASFI and IMU-ASMI” were 0.68 and 0.71 respectively. Unforeseen lumbo-pelvic restriction patterns were observed in 15 out of 40 participants. The clinical relevance of IMU sensors tests is giving a detailed overview of movement limitations in degrees by region and movement type.Conclusion:IMU measures showed reliable equivalence with the comparable BASMI measurements. Unforeseen lumbo-pelvic restriction patterns were found. Vi Move IMU sensors were highly reliable in measuring spinal movements.

KW - sensors

KW - axial spondyloarthritis

KW - IMU

KW - accuracy

KW - repeatability

KW - reliability

KW - wearable sensors

KW - measures of body motion

KW - composite score

M3 - Poster

ER -