Lumbar spine (or lower back) surgery addresses conditions affecting the lower back, such as herniated discs, spinal stenosis, or degenerative disc disease.On the morning of your surgery, you’ll arrive at the hospital and check into the preoperative area. Lumbar spine surgery is often an inpatient procedure, requiring a hospital stay of 1–5 days, depending on the type of surgery and the number of  levels (e.g., discectomy may be shorter, fusion longer), your overall health, an