Most pain in the lower back can be treated without surgery. In fact, surgery often does not relieve the pain; research suggests that 20 to 40 percent of back surgeries are not successful. This lack of success is so common that there is a medical term for it: failed back surgery syndrome. Nonetheless, there are times when back surgery is a viable or necessary option to treat serious musculoskeletal injuries or nerve compression. As with all non-emergency spinal surgeries, a trial of non-operative treatment, such as physical therapy, pain medication—preferably an anti-inflammatory, or bracing should be observed before surgery is considered. The trial period of conservative treatment varies, but six weeks to six months is the general timeframe. Spine surgery may be recommended if non-surgical treatment such as medications and physical therapy fails to relieve symptoms. Surgery is only considered in cases where the exact source of pain can be determined—such as a herniated disc, scoliosis, or spinal stenosis. Traditionally, spine surgery is usually performed as open surgery. This entails opening the operative site with a long incision so the surgeon can view and access the spinal anatomy. However, technology has advanced to the point where more spine conditions can be treated with minimally invasive techniques. Because minimally invasive spine surgery (MISS), does not involve long incisions, open manipulation of the muscles and tissue surrounding the spine is avoided, therefore, leading to shorter operative time. In general, reducing intraoperative (during surgery) manipulation of soft tissues results in less postoperative pain and a faster recovery.