Lumbar Radiculoneuropathy

  • Michael Salcman
  • Roberto C. Heros
  • Edward R. LawsJr.
  • Volker K. H. Sonntag


The symptom associated with compression of a nerve root by a herniated lumbar disk is pain down the posterolateral aspect of the lower extremity. The straight leg-raising test (Lasègue’s sign) reproducing this pain is a key physical finding. In addition to pain, compression of the lumbosacral nerve roots can produce unilateral radiculopathy characterized by numbness, weakness, and/or loss of deep tendon reflexes. Lumbar intervertebral disks commonly herniate posterolaterally (Fig. 36-1). However, lumbar disks may herniate in the midline causing symptoms and signs in both lower extremities as well as bowel or bladder dysfunction (cauda equina syndrome).


Vertebral Body Nerve Root Pedicle Screw Spinal Canal Ligamentum Flavum 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag New York, Inc. 2004

Authors and Affiliations

  • Michael Salcman
    • 1
  • Roberto C. Heros
    • 2
  • Edward R. LawsJr.
    • 3
  • Volker K. H. Sonntag
    • 4
    • 5
  1. 1.Sinai HospitalBaltimoreUSA
  2. 2.Department of Neurological SurgeryUniversity of Miami School of MedicineMiamiUSA
  3. 3.Department of Neurological SurgeryUniversity of Virginia Health Sciences CenterCharlottesvilleUSA
  4. 4.University of ArizonaUSA
  5. 5.Barrow Neurological InstitutePhoenixUSA

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