WEEK 22,23: Biomechanics Of Human Spine

Biomechanics of the Lumbar Spine, Biomechanics of the Cervical Spine, Factors influencing relative mobility and stability of different regions of Spine, Biomechanical adaptations of spine during different functions, Relationship between muscle location and nature and effectiveness of muscle action in the trunk, Biomechanical contribution to common injuries of the spine. the disc thickness to vertebral height ratio,greater ratio, greater mobility, 2:5 ratio in cervical(most mobile), 1:5 thoracic; least mobile,  1:3 ratio in lumbar spine, the vertebra’s width to height ratio, least ratio, greater mobility, c vertebra has relatively small anteroposterior and transverse diameters in relation to the body height (more mobile). orientation of articular processes. superior articular facet of c spine faces posteriorly and slightly laterally, more mobility , t- spine facets faces poserioly more rotation,  lumbar spine facets faces medially, or smaller the angle more will be mobility but in thoracic  ribs: ribs approximate on side of spinal concavity restrict movement on thoracic spine. the extent of mechanical displacement depend on ligaments, slack on midrange, taut in end range.

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