(Fig 1-B.10) Horizontal flap tears -1, Meniscotibial recess

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Insight into Horizontal Flap Tears of the Meniscus

What Are Horizontal Flap Tears?

• Horizontal flap tears involve a short segment of the meniscus with the displacement of a meniscal leaf.
• These tears commonly result in the displacement of the meniscal fragment, usually found in the posterior intercondylar notch or the gutters.
• The medial meniscus is more frequently involved than the lateral meniscus, with a ratio of 6 to 7 times.
• In medial cases, two-thirds show the fragment displaced posteriorly, towards or behind the posterior cruciate ligament (PCL).
• The remaining cases often have the fragment in the medial gutter's recesses, predominantly the superior recess.

 

Patterns of Displacement:

• For medial meniscus tears, 93% of fragments are located medially or posterolaterally, commonly in the superior or inferior recesses.
• In contrast, lateral meniscal fragments exhibit a more varied distribution.

 

Clinical Significance:

Understanding the common patterns and locations of meniscal fragment displacement is crucial for accurate diagnosis and effective treatment strategies in meniscal injuries.

These patterns highlight the importance of understanding displaced fragments' common locations and behaviors in meniscal tears.

 

 

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