Celery stalk sign - describes the appearance of an anterior cruciate ligament that has undergone mucoid degeneration (a common phenomenon). Its low signal longitudinal fibers are separated from each other by higher signal mucinous material simulating the appearance of celery. It is important to differentiate mucoid degeneration from ACL tear where there will be high signal but absent or disrupted low signal fibres.
from our tumblr blog
http://radiologysigns.tumblr.com/
