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17 Cards in this Set

  • Front
  • Back
Which meniscus is largest?

Describe the shapes of the Medial and Lateral menisci
Medial > Lateral

Medial = C-shaped
Lateral = circular
Describe menisci when traveling from the periphery to the central margin
Taper from a height of 3-5 mm at periphery to a thin, sharp, central free margin.
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
Posterior horn > Anterior horn
On sagital imaging, this meniscus shows a bowtie configuration?
Lateral
Why does the Medial meniscus not appear as a "bowtie" on some images?
B/c the MM is larger and the horms are more separated from one another
Which meniscus is this? How do you know?
Lateral due to bowtie configuration
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
If the Meniscofemoral Ligament is found anterior to the PCL it is called?
LIgament of Humphrey
If the meniscofemoral ligament is found Posterior to the PCL it is called?
Ligament of Wrisberg
Arrow = ?

Arrow head = ?
Arrow = PCL

Arrow head = Ligament of Humphrey
Red = Medial Femoral condyle
Yellow = Ligament of Humphrey
Green = Posterior Horn of Lateral Meniscus
Purple = Popliteus tendon
What is white arrow pointing to?
Ligament of Wrisberg = Posterior to PCL
Describe a horizontal cleavage tear
tear in a plane splitting the meniscus into superior and inferior portions (tears related to underlying meniscal degeneration are often horizontal tears)
Describe a vertical-longitudinal tear
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
Type of tear?
Vertical tear of posterior horn of medial meniscus
Tear?
Radial tear with marrow edema shown by arrow heads
Tear?
Horizontal tear of medial meniscus body