ANLS 1615 Lumbar - Lumbar Anatomy s s s s s s s s A...

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Lumbar Anatomy A :Posterior Longitudinal B:Intertransverse lig C:Supraspinous lig D:Interspinous lig E:Ligamentum flava F:Articular capsule G:Intervertbral disc H:Anterior Longitudinal
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Degrees of Freedom There are 6 degrees of freedom: Flexion Extension Left and Right Rotation Left and Right Lateral Flexion
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Lumbar Compressive Load During a normal compressive load on a disc, the force is absorbed by the nucleous pulposus first and then dispersed to the annular fibers. The nucleous pulposus acts has a pivot. During abnormal compressive load, the annular fibers absorb the majority if the force. Abnormal disc loading can occur when the disc does not receive proper nutrients resulting is dehydration if the disc or by trauma.
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Compressive Load The pivot is the nucleus (axis of rotation) During bending (flexion, extension, lateral flexion) One side of the disc is under a compressive load while the other side is tensile stress
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This note was uploaded on 11/21/2011 for the course ANLS 1615 taught by Professor Johnh.romfh during the Fall '10 term at Life Chiropractic College West.

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ANLS 1615 Lumbar - Lumbar Anatomy s s s s s s s s A...

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