Disc Bulges
Written by Dr. David Howard – B.Sc. (Clinical Sci.), M.H.Sc. (Osteopathy), B.App.Sc (Human Movement) from Pascoe Vale Osteopathy located in Pascoe Vale, Melbourne, Victoria, Australia.
Other common names for a disc bulge are: disc prolapse, disc herniation, 
blown disk, slipped disc and pinched nerve.
A Doughnut…
We first need to understand a little more about the disc. The best way to describe it is a comparison to a jam doughnut!
The disc is made up of a strong outer layer (the crusty outside), lots of water (the soft, squishy dough) with an inner core or nucleus (the jam).