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The lumbosacral plexus: anatomic-radiologic-pathologic correlation using CT.

K S Gebarski1, S S Gebarski, G M Glazer

  • 1Department of Radiology, University of Michigan Hospitals, Ann Arbor.

Radiographics : a Review Publication of the Radiological Society of North America, Inc
|May 1, 1986
PubMed
Summary
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Computed tomography (CT) imaging now allows for accurate evaluation of the lumbosacral plexus anatomy. CT effectively identifies structural lesions in patients with lumbosacral plexopathy.

Area of Science:

  • Radiology
  • Anatomy
  • Neurology

Background:

  • The lumbosacral plexus was historically difficult to visualize with medical imaging.
  • Computed tomography (CT) offers improved visualization of regional anatomy.
  • Previous imaging modalities lacked the resolution for detailed lumbosacral plexus assessment.

Purpose of the Study:

  • To establish normal regional anatomy of the lumbosacral plexus using CT.
  • To evaluate the efficacy of CT in diagnosing lumbosacral plexopathy.
  • To correlate CT findings with clinical causes of lumbosacral plexus dysfunction.

Main Methods:

  • Axial cadaver dissection was performed to define normal regional anatomy.
  • Review of 233 normal computed tomographic examinations established anatomical standards.

Related Experiment Videos

  • CT imaging was performed on 17 patients with confirmed lumbosacral plexopathy.

    • Main Results:

    • CT allows for reproducible evaluation of the lumbosacral plexus regional anatomy.
    • Individual nerve elements are not consistently resolved, but overall structure is clear.
    • CT effectively identified structural lesions in patients with plexopathy.

    Conclusions:

    • Computed tomography is a valuable tool for assessing the lumbosacral plexus.
    • CT aids in the diagnosis of structural lesions causing lumbosacral plexopathy.
    • The study provides a detailed regional anatomical map for CT interpretation.