(Fig 1-C.06) Ring-shaped meniscus versus bucket handle tear

https://youtu.be/rZr3HY-aTYU

https://youtu.be/VHbQLFiofuc

🧐The Watanabe classification outlines three types of discoid meniscus:

 

1️⃣Complete Variant: 

Characterized by a block-shaped meniscus covering the entire tibial plateau.

2️⃣Partial Variant:

The meniscus covers 80% or less of the tibial plateau.

3️⃣Wrisberg Variant:

 Features a thickened posterior horn without the usual posterior attachments, potentially leading to snapping knee syndrome.

 

The Modified Watanabe Classification adds:

 

4️⃣Ring-shaped meniscus:

 Connects between the roots, resembling a medially displaced meniscal fragment without an identifiable donor site in imaging.

 

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