Herniated Disc - Herniated or ruptured discs&nbsp;can occur when the rubbery discs between the spinal bones (vertebrae) become compressed and bulge outward or rupture (herniation), causing back pain, leg pain and sciatica.&nbsp;This condition is commonly treated with Epidural Steroid Injection (ESI). In certain severe cases, part of the disc may need to be cut-out, a procedure known as Discectomy.