Abstract
BackgroundA sagittal plane spine reposition sense device (SRSD) has been developed. Two questions were addressed with this study concerning the new SRSD: 1) whether spine movement was occurring with the methodology, and 2) where movement was taking place.MethodsSixty-five subjects performed seven trials of repositioning to a two-thirds full flexion position in sitting with X and Y displacement measurements taken at the T4 and L3 levels. The thoracolumbar angle between the T4 and the L3 level was computed and compared between the positions tested. A two (vertebral level of thoracic and lumbar) by seven (trials) mixed model repeated measures ANOVA indicated whether significant differences were present between the thoracic (T4) and lumbar (L3) angular measurements.ResultsCalculated thoracolumbar angles between T4 and L3 were significantly different for all positions tested indicating spinal movement was occurring with testing. No interactions were found between the seven trials and the two vertebral levels. No significant findings were found between the seven trials but significant differences were found between the two vertebral levels.ConclusionThis study indicated spine motion was taking place with the SRSD methodology and movement was found specific to the lumbar spine. These findings support utilizing the SRSD to evaluate changes in spine reposition sense during future intervention studies dealing with low back pain.
Highlights
A sagittal plane spine reposition sense device (SRSD) has been developed
HFiogruizroen3tal measurement view for the new SRSD method taken from the side of the sliding mechanism Horizontal measurement view for the new SRSD method taken from the side of the sliding mechanism
Spine versus hip movement If the spine does not move during the protocol with the SRSD but instead rotation occurs at the pelvis on the femurs, no differences would be found for the computed thoracolumbar angle in the various positions tested
Summary
A sagittal plane spine reposition sense device (SRSD) has been developed. Two questions were addressed with this study concerning the new SRSD: 1) whether spine movement was occurring with the methodology, and 2) where movement was taking place. The clinicians/researchers involved with the development of this new spine reposition sense device (SRSD) have found many devices (piezoelectric accelerometer, [1] Lumbar Motion Monitor, [2] 3SPACE, [12,13] Fastrak [4,14,15] and an ultrasound movement analysis system [16]) used in the literature to measure spine reposition sense. These various devices have not been used in the (page number not for citation purposes). Measurements have been taken from the T4 level which does not implicate lumbar spine motion with testing
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