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Related Experiment Video

Updated: May 20, 2026

Reverse Total Shoulder Arthroplasty
10:10

Reverse Total Shoulder Arthroplasty

Published on: July 5, 2011

Revision surgery for a dislocated constrained total knee arthroplasty.

Jonathan Hagedorn1, Brett R Levine

  • 1Department of Orthopaedics, Rush University Medical Center, Chicago, Illinois, USA.

Orthopedics
|July 13, 2012
PubMed
Summary

Knee dislocation after revision total knee arthroplasty (TKA) is a rare but serious complication. Proper management involves prompt diagnosis, reduction, stabilization, and neurovascular assessment to prevent long-term disability.

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Area of Science:

  • Orthopedic Surgery
  • Biomedical Engineering

Background:

  • Knee dislocation is a rare but severe complication following revision total knee arthroplasty (TKA).
  • Limited literature addresses this specific complication after revision TKA.
  • It often occurs with minimal trauma and is linked to flexion-extension gap imbalance.

Purpose of the Study:

  • To describe two cases of atraumatic knee dislocation after revision TKA.
  • To review literature on managing knee dislocations post-revision TKA.
  • To discuss flexion-extension gap balancing strategies.

Main Methods:

  • Case report of two patients experiencing atraumatic posterior knee dislocations after revision TKA.
  • Review of existing literature on knee dislocations post-revision TKA.

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Last Updated: May 20, 2026

Reverse Total Shoulder Arthroplasty
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Reverse Total Shoulder Arthroplasty

Published on: July 5, 2011

  • Intraoperative assessment of articular constraint.

    • Main Results:

    • Two patients experienced atraumatic posterior knee dislocations after revision TKA with semiconstrained components.
    • Flexion-extension gap mismatch was a common factor.
    • Prompt diagnosis and management are crucial for outcomes.

    Conclusions:

    • Atraumatic knee dislocation is a significant risk after revision TKA, particularly with semiconstrained implants.
    • Careful attention to flexion-extension gap balancing is essential during revision surgery.
    • Expedited diagnosis and treatment are vital to mitigate neurovascular compromise and disability.