in the MRI how much mm is normal average disc in cervical spine (in the mri )
and if that its normal to change the different high in different level
( for example c2-3 to c6-7 need to be not large significant percentage difference between
if the disc c2-3 or c4-5 look 50% of what in the other level .
Discs are convex shaped so central measurement will be different depending upon the location of measure. There is also a variation that is congenital. Central measures are from 5-8 mm. Without degeneration, discs higher in the spine are slightly narrower than lower discs.
. MD D.C SPINE SURGEON DONALD CORENMAN (REALLY EXECLENT WEBSITE U HAVE (I M READ FROM HI,M ALSO OTHER BUT THIS GOOD INFO ) i clear my point: if the mri SHOW VERTERBAL BODY C3 AND C2 AND THE DISTANCE BETWEEN THEM IS 6 MM but MRI SHOW INSIDE THE DISC JUST 60% OF THIS 3.6 MM IN THIS EXAMPLE ?