Do the discs in your spine really slip? . Patients often ask me about slipped discs. Sounds pretty scary doesn’t it, a slipped disc. You start to picture your back as a tower of bones and discs, where a disc slipping out would cause total collapse. But we don’t just collapse to the ground (although the pain it causes may feel like we might), so let’s take a look at exactly what a slipped disc is. . Your spine is made up of lots of bones called vertebrae, which are stacked on top of each other. Between these vertebrae are discs made of a tough fibrous outer and a fluid filled sack inside, a bit like a jam doughnut.