Microdiscectomy uses a special microscope to view the disc and nerves. This larger view allows the surgeon to use a smaller cut. This causes less damage to surrounding tissue.
During discectomy, the surgeon removes the part of the disc that is herniated and is pushing into the spinal canal. Any loose fragments of disc are also removed.
It is usually done in a hospital. You are asleep or numb during the surgery. You will probably stay in the hospital overnight.