Meniscal detachment is described as displacement of the meniscus 5 mm or more from the tibial plateau in association with uncovering of the tibial plateau cartilage or fluid interposition between the peripheral edge of the meniscus and the tibial plateau.
Floating meniscus in which the meniscus floats above the tibial plateau without separating entirely from the capsule, indicating a tear of the meniscotibial coronary ligament.
The presence of fluid completely surrounding the entirety of one or both horns of either meniscus should alert the possibility of a meniscal detachment.
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