Chronic Low Back Pain (CLBP) is a leading cause of disability with significant economic costs and severe psychological and social consequences. LBP patients also have the tendency to change the movement of the back and hold the pelvis rigid. Currently, the clinical assessment of a LBP patient is undertaken at a single point in time during clinic visits rather than through continuous monitoring. To monitor motion of the lumbar spine and pelvis, we have developed a wearable prototype sensor based on inertial sensor technology combined with the Body Sensor Network (BSN) platform. The device enables quantitative assessment of motion, especially the proportion of pelvic to lumbar movement. The developed device has been tested in a pilot study with healthy volunteers for a range of movements and results validated by optical tracking. This paper presents our approach and exemplifies the quantitative assessment of the lateral flexion movement. The next stage of the project will involve testing with patients.
Preventive care, healthcare management and a working population are areas of growing emphasis in industrialized countries. Recent exponential growth in technological developments has made developing wearable monitoring systems feasible. Chronic Low Back Pain (CLBP) is a leading cause of disability with staggering economic costs and severe psychological and social consequences. A principal issue is the assessment of LBP severity at a single point of time during clinic visits rather than through continuous monitoring. This paper presents the project In-House Monitoring of Low-Back-Pain Related Disability (IMPAIRED) which aims to design and develop a multi-sensor wearable prototype to monitor movement of the lumbar spine and pelvis, sleep disturbance (circadian rhythm), as well as muscle fatigue and activity pattern. We have identified relevant movements correlating to disability associated with LBP, evaluated the suitability of inertial sensors to monitor the expected range of movement and proposed a sensor placement map.
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