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A Displaced Double-Layered Meniscus in a Caucasian Patient: A Case Report
Nicole C Fraticelli1, Haley A Prough1, C Luke Wilcox2
1Department of Orthopedic Surgery, McLaren Greater Lansing, Lansing, Michigan.
JBJS Case Connector
|February 16, 2022
Summary
A rare double-layered lateral meniscus in a Caucasian woman caused knee instability. Arthroscopic removal of the accessory meniscus resolved symptoms, highlighting a treatment option for this uncommon condition.
Area of Science:
- Orthopedic surgery
- Human anatomy
Background:
- Double-layered menisci are an uncommon anatomical variation, frequently observed in Asian populations.
- This condition can mimic meniscus tears, potentially leading to knee instability.
Observation:
- A Caucasian woman presented with a double-layered lateral meniscus, a rare occurrence in her demographic.
- The accessory lateral meniscus had migrated into the intercondylar notch, inducing instability in her right knee.
Findings:
- Surgical arthroscopic removal of the accessory lateral meniscus was performed.
- The patient experienced complete symptom resolution following the procedure.
Implications:
- This case demonstrates that double-layered menisci can affect Caucasian individuals.
- Arthroscopic debridement is an effective treatment for accessory lateral meniscus displacement causing knee instability.
