Spine Anatomy

Aka: Spine Anatomy, Vertebral Column, Vertebra, Vertebral Anatomy, Vertebra Anatomy

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II. Anatomy: Bone

  1. orthoSpineVertebraeGrayBB67.gif Lewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
  2. orthoSpineVertebraeGrayBB82.gif Lewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
  3. orthoSpineVertebraeGrayBB83.gif Lewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
  4. OrthoSpineCompleteLateralGrayBB111.gif Lewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)

III. Anatomy: Muscle

  1. orthoSpineMusclesGrayBB409.gif Lewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)

IV. Anatomy: General

  1. orthoSpineLandmarksGrayBB1212.gif Lewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)

V. Anatomy: Vertebral Landmarks

  1. Anterior
    1. Anterior longitudinal ligament
    2. Vertebral Body
  2. Middle
    1. Pedicle
    2. Transverse Process
    3. Articular facet
  3. Posterior
    1. Posterior longitudinal ligament
    2. Lamina
    3. Spinous process

VI. Anatomy: Disc

  1. Nucleus pulposus
    1. Inner gelatinous core
    2. High water content
    3. Desiccates with age losing cushioning over time
  2. Anulus fibrosis
    1. Outer fibrous ring encases nucleus pulposus

VII. Anatomy: Ligaments

  1. Anterior Support
    1. Anterior Longitudinal ligament (anterior to body)
    2. Posterior Longitudinal Ligament (posterior to body)
      1. Weak laterally
      2. Allows for lateral disc Herniation
  2. Posterior Support
    1. Ligamentum Flavum (binds laminae)
    2. Nuchal ligament (binds spinous processes): Strong
    3. Interspinous Lig. (binds spinous processes): Strong
  3. Capsular Ligament
    1. Binds articular joint
    2. Weak and lax

VIII. Anatomy: Nerve Course

  1. Nerve exits above Vertebra
    1. Nerve C5-6 exits above C6 Vertebrae
  2. Nerves C5 and C6 most commonly impinged (90%)
  3. Exit sites
    1. Foramen between pedicles
    2. Apophyseal joint posterolaterally
    3. Joint of Luschka anteromedially

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