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Related Experiment Videos

The spinal epidural space.

R L Newell1

  • 1Anatomy Unit, Cardiff School of Biosciences, Cardiff University, Cardiff, United Kingdom. Newell@cardiff.ac.uk

Clinical Anatomy (New York, N.Y.)
|August 27, 1999
PubMed
Summary
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The spinal epidural space is not a true space in living subjects but a potential space, better termed the epidural cavity. This anatomical terminology reflects its nature as a potential cavity rather than a distinct anatomical space.

Area of Science:

  • Anatomy
  • Surgical Anatomy
  • Medical Terminology

Background:

  • The term 'epidural space' is commonly used in clinical practice and anatomical literature.
  • Its existence as a distinct anatomical space in intact living subjects has been debated.
  • Previous research has questioned the morphological and topographical validity of the epidural space concept.

Purpose of the Study:

  • To critically evaluate the concept of the epidural space within the vertebral canal.
  • To determine if the spinal epidural space meets the criteria for a 'true potential space'.
  • To propose revised anatomical terminology for the spinal epidural region.

Main Methods:

  • Morphological investigation of the vertebral canal.
  • Developmental analysis of the spinal epidural region.

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  • Topographical assessment of the anatomical structures involved.
  • Review of existing anatomical literature and criteria for anatomical spaces.

    • Main Results:

    • No actual 'epidural space' exists in the intact living subject.
    • The spinal epidural region satisfies the criteria for a 'true potential space'.
    • The term 'epidural cavity' is proposed as a more accurate descriptor.

    Conclusions:

    • The spinal epidural region functions as a potential space, not a continuously existing one.
    • Revising the terminology to 'epidural cavity' aligns with its anatomical characteristics and historical usage.
    • Accurate anatomical terminology is crucial for clear scientific and clinical communication.