Quantification of Lumbar-pelvic Coordination
نویسندگان
چکیده
Sagittal trunk motion is accomplished through a coordination of pelvic rotation and lumbar spine flexion/extension. As trunk range of motion in healthy subjects is not fundamentally different to persons with lowback pain (LBP), other means of discriminating the two populations must be used. Research suggests that lumbar-pelvic (LP) coordination could be a potential diagnostic metric for LBP. Though LP coordination has been studied at length, there is little consensus regarding the gross contributions of the lumbar spine and pelvis to total trunk motion; literature values for lumbar to pelvic (L/P) ratios range from 0.4 to 1.97. Such a spread of literature values would pose difficulties for the comparison of healthy and LBP populations. Previous studies have not controlled lifting parameters such as weight or trunk extension velocity as possible influences of LP coordination. A study of the effect of lifting parameters upon LP coordination was performed to provide a complete description of lifting behavior and to assess possible sources of error in previous quantifications of LP coordination.
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