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Locked patellar dislocation with vertical axis rotation. A case report.

S J Corso1, R Thal, D Forman

  • 1Department of Orthopaedic Surgery, Long Island Jewish Medical Center, New Hyde Park, New York 11042.

Clinical Orthopaedics and Related Research
|June 1, 1992
PubMed
Summary
This summary is machine-generated.

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Rare patellar dislocations involving significant rotation are challenging to treat. Open reduction may be necessary when closed reduction attempts fail, even under general anesthesia.

Area of Science:

  • Orthopedic Surgery
  • Knee Joint Biomechanics

Background:

  • Traumatic lateral patellar dislocation is common.
  • Patellar dislocations with rotation are rare and pose therapeutic challenges.

Observation:

  • A 16-year-old male experienced a 90-degree vertically rotated patellar dislocation after a lateral knee blow.
  • The patella became lodged against the lateral femoral condyle.

Findings:

  • Closed reduction attempts under general anesthesia were unsuccessful.
  • Open reduction was required due to the unique nature of the dislocation, with the patella lateral to the femoral condyle.

Implications:

  • Surgeons must be prepared for open reduction in rare, rotated patellar dislocations.
  • This case highlights the need for tailored surgical approaches in complex patellar instability.

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