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๐ฆต Horizontal Flap Tear vs. Horizontal Tear ๐ฆต
Horizontal Flap Tear
- In a horizontal flap tear, we observe a meniscal fragment displaced deeper than the Medial Collateral Ligament (MCL). However, in a horizontal cleavage tear, there is no meniscal fragment situated deeper than the MCL.
- ๐๏ธ๐จ๏ธ Diagnosing a horizontal flap tear can be challenging and is sometimes overlooked. Given that most displaced meniscal tears are found medially and posterolaterally in the medial meniscus, it's crucial to scrutinize these areas closely.
Horizontal Cleavage Tear
- Horizontal meniscal tears occur within the meniscus in a horizontal plane, dissecting through its circumferential collagen fibers.
- They appear as horizontally oriented lines with increased intrameniscal signal, often extending to either the superior or inferior surface of the meniscus, typically near the free edge.
- Most horizontal tears reach the meniscus's inferior surface.
- ๐ When a horizontal tear extends to the meniscal apex, it's referred to as a pure horizontal cleavage tear.
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"Visualizing MSK Radiology: A Practical Guide to Radiology Mastery"
© 2022 MSK MRI Jee Eun Lee All Rights Reserved.© 2022 MSK MRI Jee Eun Lee All Rights Reserved.
'โ Knee MRI Mastery > Chap 1. Meniscus' ์นดํ ๊ณ ๋ฆฌ์ ๋ค๋ฅธ ๊ธ
| (Fig 1-B.19) Complex meniscal tear (2) | 2024.02.01 |
|---|---|
| (Fig 1-B.18) Change in the slope of a flap tear (0) | 2024.01.31 |
| (Fig 1-B.16) Tips for detecting flap tear in MRI findings (2) | 2024.01.29 |
| (Fig 1-B.15) Displaced flap tear into the Popliteal hiatus (0) | 2024.01.28 |
| (Fig 1-B.14) displaced flap tear into the intercondylar notch -2 (0) | 2024.01.27 |