Segmental Kinematic Coupling of the Human Spinal Column during Locomotion-中国期刊网

摘要 Asoneofthemostimportantdailymotoractivities,humanlocomotionhasbeeninvestigatedintensivelyinrecentdecades.Thelocomotorfunctionsandmechanicsofhumanlowerlimbshavebecomerelativelywellunderstood.However,sofarourunderstandingofthemotionsandfunctionalcontributionsofthehumanspineduringlocomotionisstillverypoorandsimul-taneousin-vivolimbandspinalcolumnmotiondataarescarce.Theobjectiveofthisstudyistoinvestigatethedelicatein-vivokinematiccouplingbetweendifferentfunctionalregionsofthehumanspinalcolumnduringlocomotionasasteppingstonetoexplorethelocomotorfunctionofthehumanspinecomplex.Anovelinfraredreflectivemarkerclustersystemwasconstructedusingstereophotogrammetrytechniquestorecordthe3Din-vivogeometricshapeofthespinalcolumnandthesegmentalpositionandorientationofeachfunctionalspinalregionsimultaneously.Gaitmeasurementsofnormalwalkingwereconducted.Thepreliminaryresultsshowthatthespinalcolumnshapechangesperiodicallyinthefrontalplaneduringlocomotion.Thesegmentalmotionsofdifferentspinalfunctionalregionsappeartobestronglycoupled,indicatingsomesynergisticstrategymaybeemployedbythehumanspinalcolumntofacilitatelocomotion.Incontrasttotraditionalmedicalimaging-basedmethods,theproposedtechniquecanbeusedtoinvestigatethedynamiccharacteristicsofthespinalcolumn,henceprovidingmoreinsightintothefunctionalbiomechanicsofthehumanspine.

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Segmental Kinematic Coupling of the Human Spinal Column during Locomotion

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Segmental Kinematic Coupling of the Human Spinal Column during Locomotion

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