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Dislocated double-layered lateral meniscus mimicking the bucket-handle tear
Orthopedics
|October 8, 2013
Summary
A rare double-layered lateral meniscus can cause knee pain and mimic tears. Early diagnosis is crucial to prevent further injury to the normal meniscus.
Area of Science:
- Orthopedic Surgery
- Radiology
- Human Anatomy
Background:
- Congenital abnormalities of the meniscus are diverse.
- The double-layered meniscus is an exceptionally rare anomaly.
Observation:
- A 22-year-old male presented with right knee pain without traumatic history.
- Imaging revealed a double-layered lateral meniscus, with upper and lower components.
- The upper meniscus was displaced into the intercondylar notch, resembling a bucket-handle tear.
Findings:
- The upper meniscus was attached to the lower lateral meniscus but not to the capsule.
- The lower meniscus appeared normal, excluding bucket-handle or horizontal tears.
- The anomaly presented as a unique anatomical variation.
Implications:
- Clinicians must recognize this rare condition to avoid misdiagnosis.
- Awareness of double-layered menisci is vital for preventing secondary tears.
- Prompt diagnosis and management are essential for preserving meniscal integrity.
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