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Atypical hangman's fractures

J K Starr1, F J Eismont

  • 1Department of Orthopaedic Surgery, George Washington University, Washington, DC.

Spine
|October 15, 1993
PubMed
Summary

Atypical hangman's fractures of the axis (C2) can narrow the spinal canal and cause paralysis more often than previously thought. Recognizing these distinct injuries is crucial for patient outcomes.

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Area of Science:

  • Orthopedics
  • Neurosurgery
  • Trauma Surgery

Background:

  • Traumatic spondylolisthesis of the axis (C2) includes standard hangman's fractures and atypical variants.
  • Atypical hangman's fractures involve the posterior vertebral body and can compromise the spinal canal.

Purpose of the Study:

  • To differentiate atypical hangman's fractures from standard types.
  • To assess the frequency and neurological implications of atypical C2 injuries.

Main Methods:

  • Retrospective review of 19 cases of traumatic axis spondylolisthesis.
  • Classification of fractures based on Effendi's criteria and analysis of associated injuries.

Main Results:

  • Six cases of atypical hangman's fractures were identified, distinct from standard Effendi Types I and II.
  • Atypical fractures frequently narrowed the spinal canal.
  • Paralysis occurred in 33% of patients with atypical C2 injuries.

Conclusions:

  • Atypical hangman's fractures represent a distinct injury pattern with a higher risk of neurologic compromise.
  • Early recognition of these unique C2 injuries is essential for appropriate management.
  • Further research is needed to clarify the incidence and long-term outcomes of these fractures.

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