Failed back surgery syndrome, or FBSS, only occurs in those patients who have experienced a laminectomy, or surgical removal of the lamina, a piece of a bone that is located in the spine. This surgical procedure is for those who suffer from sciatica, and performed when the there is a disc bulge present. By removing the lamina, the hope is that the pressure will be relieved from the nerve. However, sometimes this surgical procedure will not have the desired results, and the patient will continue to have sciatic pain. Sometimes, the patient will also experience numbness and tingling post surgery. When this occurs, the patient is then diagnosed as suffering from post-laminectomy or failed back surgery syndrome.