What Are Lumbar Disc Herniations? Our spine is made up of 24 discs that form our vertebrae and serious injury to any of these discs can happen. The most common area of the spine where people hurt their discs is, the lumbar spine. More than 50 percent of people will experience some form of lower back pain. If you have experienced back pain or a condition, come to the best physical therapy in Shirley at United Rehab Physical Therapy. Causes There are numerous reasons as to wh