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17 Cards in this Set
- Front
- Back
Which meniscus is largest?
Describe the shapes of the Medial and Lateral menisci |
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Medial > Lateral
Medial = C-shaped Lateral = circular |
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Describe menisci when traveling from the periphery to the central margin
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Taper from a height of 3-5 mm at periphery to a thin, sharp, central free margin.
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The anterior and posterior horns of the lateral meniscus are similar in size; however, this horn of the medial meniscus is larger than the other
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Posterior horn > Anterior horn
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On sagital imaging, this meniscus shows a bowtie configuration?
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Lateral
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Why does the Medial meniscus not appear as a "bowtie" on some images?
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B/c the MM is larger and the horms are more separated from one another
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Which meniscus is this? How do you know?
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Lateral due to bowtie configuration
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The menisci are firmly attached to the ____ at anterior and posterior insertion sites.
In addition, _______ ligaments course from the posterior horn of the Lateral Meniscus to the ______ |
Tibia
Menisofemoral ligaments Medial Femoral Condyle |
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If the Meniscofemoral Ligament is found anterior to the PCL it is called?
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LIgament of Humphrey
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If the meniscofemoral ligament is found Posterior to the PCL it is called?
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Ligament of Wrisberg
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Arrow = ?
Arrow head = ? |
Arrow = PCL
Arrow head = Ligament of Humphrey |
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Red = Medial Femoral condyle
Yellow = Ligament of Humphrey Green = Posterior Horn of Lateral Meniscus Purple = Popliteus tendon |
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What is white arrow pointing to?
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Ligament of Wrisberg = Posterior to PCL
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Describe a horizontal cleavage tear
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tear in a plane splitting the meniscus into superior and inferior portions (tears related to underlying meniscal degeneration are often horizontal tears)
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Describe a vertical-longitudinal tear
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Tear that is circumferential and perpendicular to the tibial plateua that extends from the superior to inferior meniscal margin and propagates around the circumference of the meniscus
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Type of tear?
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Vertical tear of posterior horn of medial meniscus
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Tear?
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Radial tear with marrow edema shown by arrow heads
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Tear?
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Horizontal tear of medial meniscus body
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