steplight 9 - LECTURE #9: Spinal Injuries Anatomy 33...

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LECTURE #9: Spinal Injuries Anatomy 33 vertebrae o 7 cervical o 12 thoracic o 5 lumber o 5 sacrum (fused) o 4 coccygeal (fused) Intervertebral Disc o 25% of length of vertebral column o Degenerate from use o C3 – L5 (only places they are) o Cartilaginous; collagen o Functions: cushion & allow mobility o Mostly composed of water o 2 rings Annulus Fibrosis: fibro cartilage Nucleus Pulposa: center; jelly like Herniated Disc o Nucleus pulposa through annulus fibrous o Usually posterior lateral because annulus fibrous is the thinnest and posterior longitudinal is the weakest o Can push on nerve roots o Pain, numbness (sciatica) o Severity can change: due to age, sudden pressure Normal Curvature o Cervical: concave posteriorly o Thoracic: concave anteriorly o Lumbar: concave posteriorly o Sacrococcygeal: concave anteriorly o PAPA Injuries and Conditions Kyphosis o Abnormal T-spine curvature o Scheuermann’s Disease o Swimmers (especially butterfly) and gymnasts
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steplight 9 - LECTURE #9: Spinal Injuries Anatomy 33...

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