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Locked patellar dislocation: a case report.

Frederick Michels1, Nicole Pouliart, Dirk Oosterlinck

  • 1UZ Brussel, Brussels, Belgium. frederick_michels@hotmail.com

Journal of Medical Case Reports
|December 6, 2008
PubMed
Summary
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This case report details an uncommon locked patellar dislocation in a teen dancer. Open reduction was necessary when closed reduction failed, highlighting the need for surgical intervention in irreducible cases.

Area of Science:

  • Orthopedic Surgery
  • Sports Medicine
  • Traumatology

Background:

  • Acute patellar dislocation is common, typically lateral.
  • Spontaneous or closed reduction is often successful.
  • This report focuses on a rare, irreducible locked patellar dislocation.

Purpose of the Study:

  • To report a unique case of locked patellar dislocation.
  • To illustrate the limitations of closed reduction techniques.
  • To emphasize the role of advanced imaging and surgical intervention.

Main Methods:

  • A 16-year-old female experienced a locked patellar dislocation during dancing.
  • Computed tomography (CT) confirmed the dislocation with rotational displacement.
  • Failed closed reduction necessitated open reduction and repair of torn structures.

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Main Results:

  • Open reduction successfully addressed the locked patellar dislocation.
  • The patient achieved good functional outcome at 1-year follow-up.
  • No recurrence of patellar dislocation was reported.

Conclusions:

  • Some patellar dislocations are irreducible via closed techniques.
  • Computed tomography is crucial for diagnosing complex dislocations.
  • Open reduction with repair of medial ligamentous structures is vital for irreducible cases.