Spinal Anatomy: (WK5)(Tues)(Fall20): this lecture, we start a deep dive into the nucleus pulposus and annulus fibrosus. Learn why annular tear within the disc can be the root of all evil for some but not all. We'll talk about the poorly designed disc feeding system and talk about the Pfirrmann system of rating this degeneration. I will also introduce you to the three types of annular tear, as well as the HIZ. Plus a lot more!