Abstract
Discussion of articular cartilage disease detection by MRI usually focuses on the
presence of bright signal on T2-weighted sequences, such as in Grade 1 chondromalacia
and cartilage fissures containing fluid. Less emphasis has been placed on how cartilage
disease may be manifested by dark signal on T2-weighted sequences. The appearance
of the recently described “cartilage black line sign” of the femoral trochlea highlights
these lesions and further raises the question of their etiology. We illustrate various
hypointense signal lesions that are not restricted to the femoral trochlea of the
knee joint and discuss the possible etiologies for these lesions.
Keywords
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Article info
Publication history
Published online: May 12, 2014
Accepted:
May 4,
2014
Received:
January 27,
2014
Footnotes
☆Conflict of interest: The authors declare that they have no conflict of interest.
Identification
Copyright
© 2014 Elsevier Inc. Published by Elsevier Inc. All rights reserved.
