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Iris Fixation via External Pentagram Suturing
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Non-union: Indications for external fixation.

A H R W Simpson1, L Robiati1, M M K Jalal1

  • 1Department of Trauma and Orthopaedics, University of Edinburgh, Royal Infirmary of Edinburgh, 51 Little France Crescent, Old Dalkeith Road, Edinburgh, EH16 4SA, United Kingdom.

Injury
|April 9, 2019
PubMed
Summary
This summary is machine-generated.

External fixation is a key treatment for long-bone non-unions, addressing mechanical, biological, and infectious factors. Its indications are refining with better understanding of fixation outcomes.

Keywords:
Delayed unionExternal fixationFracture non-unionFracture-related infection

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Area of Science:

  • Orthopedic surgery
  • Traumatology
  • Biomaterials science

Background:

  • External fixation is a primary treatment for approximately 50% of long-bone non-unions.
  • Distinguishing non-union from delayed union is diagnostically challenging, particularly in primary bone healing.
  • Fracture non-union etiology is multifactorial, involving mechanical, biological, and infectious elements.

Purpose of the Study:

  • To review the role and indications of external fixation in managing long-bone non-unions.
  • To highlight the diagnostic challenges in differentiating non-union from delayed union.
  • To categorize the multifactorial causes of fracture non-union, including infection.

Main Methods:

  • Literature review of external fixation in fracture non-union management.
  • Analysis of diagnostic criteria for non-union versus delayed union.
  • Categorization of non-union etiologies and external fixation indications.

Main Results:

  • Infection complicates approximately 40% of fracture non-unions, sometimes without clear suspicion.
  • External fixation is indicated for alignment correction, mechanical stimulation, fragment fixation, and staged reconstruction.
  • Specific anatomical sites like the tibia, humerus, and juxta-articular areas benefit from external fixation for non-unions.

Conclusions:

  • External fixation remains an essential modality for managing fracture non-unions.
  • The relative indications for external versus internal fixation are evolving with improved outcome data.
  • Accurate diagnosis and understanding of multifactorial causes are crucial for effective non-union treatment.