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  Ilioinguinal :             L1
  Iliohypogastric :          L1
  Quadratus Lumborum :  T12, L1, L2, L3

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- Pearls:
    - trauma at this level may cause cauda equina syndrome ;
    - myelomenigocele:
          - 100% of pts who have lesion at L1 or L2 or higher use wheelchair;
          - 78% of pts who have lesion at lower level (L3, L4, L5) use wheelchair at least part of the time