(Fig 1-C.16) Meniscal Flounce and flounce-like fold

https://youtu.be/k5lJ2yLaoZs

https://youtu.be/VHbQLFiofuc

✅ Meniscal Flounce Summary:

• Meniscal flounce refers to a wave-like appearance of meniscus edges in sagittal MRI images.
• It occurs in about 0.2% to 0.3% of patients, mainly when the knee is flexed, and the free edge shows redundancy.
• While discussed in the context of the medial meniscus, it can also affect the lateral meniscus.
• The wave-like appearance is notable, but other attachments are usually intact, and no tearing is seen in coronal images.

 

🧐 Key Points to Consider:

✅ Pitfall:

• Flounce may mimic a torn meniscus in sagittal images but is not indicative of an actual tear.
• Coronal images can make the free edge look torn due to the wave-like shape.

✅ Don't Dismiss Flounce:

• When a meniscal flounce is detected, it's crucial to examine for potential ligamentous or capsular injuries that might cause laxity.
• Detecting a meniscal flounce necessitates checking for possible ligamentous or capsular injuries causing laxity, particularly with lateral meniscal flounces.
• These are rare and might suggest popliteomeniscal fascicle injury/deficiency, resulting in meniscal hypermobility.

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