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Neurapraxia in Time and Space.

Gavin A Davis1,2, Amgad S Hanna3,4, R Shane Tubbs5,6,7,8,9

  • 1Department of Neurosurgery, Austin Health, Melbourne, Victoria, Australia.

Neurosurgery
|February 5, 2026
PubMed
Summary
This summary is machine-generated.

Neurapraxia is a transient peripheral nerve palsy characterized by localized demyelination, not axonal damage. Recovery occurs within weeks, preceding axonal regeneration, defining its temporal and spatial characteristics.

Keywords:
HistoryNerve anatomyNerve injuryNerve pathologyNeurapraxiaTaxonomy

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Area of Science:

  • Neurology
  • Neurosurgery
  • Peripheral Nerve Injury

Background:

  • The term neurapraxia, introduced in 1941, describes transient peripheral nerve dysfunction.
  • It is often misused and requires clarification distinguishing it from axonotmesis and neurotmesis.
  • Understanding neurapraxia necessitates examining its temporal and spatial aspects.

Purpose of the Study:

  • To define neurapraxia by examining its origins and time-course of injury and recovery.
  • To elucidate the microstructure and anatomical locations of neurapraxic injuries.
  • To establish a comprehensive temporal and spatial definition of neurapraxia.

Main Methods:

  • Historical review of the term neurapraxia.
  • Analysis of the time-course of neurapraxic injuries and recovery.
  • Histopathological examination of neurapraxic injury microstructure.
  • Spatial analysis of neurapraxic injury locations within the peripheral nervous system.

Main Results:

  • Neurapraxia is defined temporally by transient palsy with recovery within weeks, before axonal regeneration.
  • Spatially, it involves localized demyelination in nerves with epineurium and Schwann cells.
  • Neurapraxia applies to peripheral nerves distal to the spine, excluding cranial nerves and spinal roots due to cellular and structural variations.

Conclusions:

  • Neurapraxia is a distinct peripheral nerve injury characterized by transient dysfunction and localized demyelination.
  • Its definition is both temporal (rapid recovery) and spatial (specific nerve structures).
  • Accurate application of the term neurapraxia requires understanding its precise pathological and anatomical scope.