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Irreducible knee dislocations secondary to interposed menisci
1Department of Orthopaedics and Rehabilitation, Yale School of Medicine, New Haven, Connecticut, USA.
American Journal of Orthopedics (Belle Mead, N.J.)
|March 10, 2001
Summary
Displaced bucket-handle meniscal tears can prevent non-surgical knee dislocation reduction. Open reduction is necessary for these specific knee injuries, highlighting the importance of considering meniscal tears in dislocation evaluations.
Area of Science:
- Orthopedic Surgery
- Sports Medicine
- Knee Biomechanics
Background:
- Knee dislocations involve complex osseous and soft tissue injuries.
- Ligamentous injuries are commonly studied, but meniscal patterns are less frequently described.
- Meniscal tears can significantly impact knee joint stability and function.
Observation:
- Two cases of knee dislocation presented with displaced medial meniscal tears.
- These tears obstructed closed reduction, necessitating surgical intervention.
- Bucket-handle tears were specifically identified as a cause of irreducible dislocations.
Findings:
- Displaced bucket-handle medial meniscal tears are a critical factor in knee dislocations.
- The presence of such tears can preclude non-operative management.
- Open reduction is required to address these specific meniscal injuries.
Implications:
- Clinicians must actively assess for meniscal tears in all knee dislocations.
- Failure to identify displaced meniscal tears may lead to delayed or inadequate treatment.
- Understanding these patterns improves surgical planning and patient outcomes for knee dislocations.
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