Lumbar microdiscectomy surgery is a minimally invasive surgical procedure performed on patients with a herniated lumbar disc. During this surgery, a surgeon will remove portions of the herniated disc to relieve pressure on the spinal nerve column. A lumbar microdiscectomy surgery is typically performed to alleviate the symptoms and signs of sciatica in the lower back and leg caused by a lumbar disc herniation. The goal of this surgery is to improve leg pain, restore function, and enable a return to normal daily activities.