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Horizontal Cleavage Tear

Horizontal Cleavage Tear

Meniscal tears are classified by the plane in which they run. Here a large tear running in the horizontal plane which almost cleaves the lateral meniscus into two is shown. The normal meniscus is low signal (black) and the tear is high signal (white). The medial meniscus is intact.

Coronal spin density images A to C, coronal STIR images D to F and a sagittal T2* image G are shown:

horizontal_cleavage_tear_20005 horizontal_cleavage_tear_20006 horizontal_cleavage_tear_20007horizontal_cleavage_tear_20002 horizontal_cleavage_tear_20003 horizontal_cleavage_tear_20004horizontal_cleavage_tear_20001
The second example is a horizontal cleavage type tear of the posterior horn of the medial meniscus which intersects the inferior meniscal surface.  Sagittal T2*, coronal STIR and coronal T1 weighted images are shown:

horizontal_cleavage_tear_30007 horizontal_cleavage_tear_30005 horizontal_cleavage_tear_30006

horizontal_cleavage_tear_30004 horizontal_cleavage_tear_30001 horizontal_cleavage_tear_30002horizontal_cleavage_tear_30008 horizontal_cleavage_tear_30009

The third example is also a horizontal cleavage type tear of the posterior horn of the medial meniscus which intersects the inferior meniscal surface.T1 weighted sagittal images:

horizontal_cleavage_tear0001 horizontal_cleavage_tear0002 horizontal_cleavage_tear0003

T2 weighted sagittal images:

horizontal_cleavage_tear0004  horizontal_cleavage_tear0005  horizontal_cleavage_tear0006

Coronal STIR images:

horizontal_cleavage_tear0007 horizontal_cleavage_tear0008

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