Indications for Minimally Invasive Intervertebral Foraminoscopic Crestal Surgery Minimally invasive techniques are highly promoted in the medical industry today due to the advantages of less trauma, less pain, and faster recovery, but not all disorders are suitable for minimally invasive treatment. Patients with disc herniation who choose to undergo minimally invasive foraminoscopic crestal surgery must exhibit signs and symptoms of nerve root compression and must meet the following conditions: 1. persistent or recurrent radicular pain. 2. 2. Root pain heavier than lumbar pain. If the symptoms of lumbar pain are greater than leg pain in patients with moderate or less bulging can first do cryogenic plasma meduloplasty. 3.Invalidated by strict conservative treatment. Including the use of steroidal or non-steroidal anti-inflammatory painkillers, physical therapy, homework or condition training procedures, conservative treatment is recommended for at least 4 – 6 weeks, but if there is a progressive worsening of neurological symptoms, immediate surgery is required. 4, No history of substance abuse or psychological disorders. 5, Positive straight leg raise test and difficulty bending. 6, In order to precisely determine the location and nature of the herniated or prolapsed nucleus pulposus, as well as intervertebral foraminal osteophytes, a thorough imaging examination should be performed before surgery, especially CT and MRI are important tools to precisely determine the size, location and nature of the nucleus pulposus.