Comparing to surgical methods used for management of degenerative lumbar disc disease we found that interlaminar microdiscectomy has more rapid improvement for leg pain, back pain and less hospital stay days especial first 6th month after surgery than standard laminectomy and discectomy. So when there were a lumbar disc in single level with normal diameter spinal canal, with leg pain more than back pain, it is better to use the interlaminar microdiscectomy method.