Lumbar Spine Anatomy

Aka: Lumbar Spine Anatomy, L-Spine Anatomy, Lumbar Spine, Lumbosacral Spine

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II. Anatomy: General

  1. See Spine Anatomy
  2. Components
    1. Spinal cord terminates at L1-L2 in the adult
    2. Lumbosacral nerve roots comprise cauda equina
  3. Lumbar Nerve Course
    1. Disc disease affects nerve exiting one level below
      1. Nerve passes over the affected disc
    2. Example
      1. L4-5 disc Herniation affects L5 nerve
      2. Contrast with C-Spine Anatomy (C1-7 exit above its associated cervical disc)

III. Images: Vertebrae

  1. LumbarSpineInCrossSection.gif
  2. LumbarSpineAnatomyVertebra.gif
  3. LumbarSpineAnatomyDisc.gif
  4. orthoLegLumbarDorsalFasciaGrayBB388.gif Lewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
  5. orthoSpineVertebraeLumbarGrayBB93.gif Lewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
  6. orthoSpineVertebraeLumbar5GrayBB94.gif Lewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
  7. orthoSpineVertebraeLumbarLateralXsGrayBB301.gif Lewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
  8. orthoSpineVertebraeLumbarLateralGrayBB92.gif Lewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)

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