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Irreducible posterolateral elbow dislocation: A case report.

B Diop1, M Maibe2, B Dembele2

  • 1Department of Surgery, Gaston Berger University, Saint-Louis, Senegal.

Trauma Case Reports
|October 10, 2022
PubMed
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This summary is machine-generated.

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Posterolateral elbow dislocations are common, but irreducible ones without fractures are rare. This case highlights a buttonhole radial head entrapment as a cause of irreducible elbow dislocation, requiring open reduction.

Area of Science:

  • Orthopedic Surgery
  • Traumatology
  • Anatomy

Background:

  • Elbow dislocations, especially posterolateral, are frequent orthopedic injuries.
  • Closed reduction is the standard initial treatment for most elbow dislocations.
  • Irreducible elbow dislocations without fractures are exceptionally uncommon.

Observation:

  • A 21-year-old patient presented with an isolated posterolateral elbow dislocation.
  • Initial attempts at closed reduction were unsuccessful, indicating an irreducible dislocation.
  • The dislocation was characterized by a significant protrusion of the radial head.

Findings:

  • Open reduction revealed the radial head entrapped in a 'buttonhole' fashion within the joint capsule.
  • Complex ligamentous involvement was noted alongside the radial head entrapment.
Keywords:
ButtonholeDislocationElbowIrreducible

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  • The specific mechanism involved the radial head passing through a tear in the capsule.

    • Implications:

    • This case underscores the importance of considering irreducible dislocations in cases of failed closed reduction.
    • Radial head buttonholing within the capsule is a critical finding suggesting the need for surgical intervention.
    • Accurate diagnosis and prompt open reduction are crucial for restoring elbow function in such rare presentations.