Sunday 2 July 2017

image Q. 62 - Smooth ride

Q.   All are features of cartilage components except -


a. Tide mark
b. Lamina splendens
c. Caloitied cartilage
d. High intensity zone




















































































































































Answer -
d

High intensity zone is MRI feature of early intervertebral disc prolapse when annular tear or fissure starts to form usually posteriorly in commoner posterior impending disc prolapse. A bright focal signal is seen in T2/weighted images.

All others are layers of articular cartilage. A brief schematic diagram of articular cartilage layers is given below (with number 1- lamina splendens, 2,3 and 4 are superficial middle and deep layers, 5- tide mark , 6- caloitied layer, 7- subchondral bone and 7 - cancellous bone.



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