The people to middle age, inevitably have experienced back and leg pain, serious fidgeting, and even can not walk down, the doctor told you “kidney deficiency”, so the massage, Chinese medicine tonics to strengthen the kidney, some torment after the pain is still, in vain. In fact, almost all pain in the human body is related to nerve compression and stimulation, low back pain is no exception, in order to cure the disease, the first thing is to find the cause of the disease, the cause of the treatment to cure the root. A sciatica is common in young and middle-aged people, mostly unilateral pain, pain along the back of the buttocks has been radiated to the back of the thigh back, calf back lateral, lateral back of the foot, pain is mostly persistent, bending, sitting and standing when the pain increased, lying down slightly reduced, patients often wake up in the middle of the night because of intense lumbar and leg pain, after the acute phase of the patient is also accompanied by lower limbs, back of the foot, toes numbness. Sciatica manifests as leg pain, the most common cause may be the herniated disc compressing the lumbar 4-5 or lumbar 5-sacral 1 nerve, the nerve from the spinal cord, which emanates from the intervertebral foramen of the spine at about the lumbar region (tied trouser position), integrates a bundle to form the sciatic nerve and then travels down the back lateral side of the thigh to innervate the sensation of the lower extremities, when trauma causes the lumbar disc to be damaged and herniated and then compress the nerve in the spinal canal, causing lumbar leg Radicular pain. There are many ways to treat sciatica, such as physical therapy and painkillers, which are not a cure. Traditional disc removal for sciatica is effective, but it is traumatic and may cause serious complications if the nerve is not careful. In recent years, neurosurgeons have removed the herniated disc nucleus pulposus under the microscope minimally invasively to release the compressed nerve, which is an ideal treatment option. Sacral canal cyst Sacral canal cyst mainly manifests as chronic pain and discomfort in the lower back, sacrococcygeal region and perineum (around the urethral opening, vaginal opening and anus); it may also be accompanied by pain in the dorsal side of the thigh, sciatica, and even some patients walk with a limp. Pathogenesis principle: As cerebrospinal fluid enters the cyst, the pressure of cerebrospinal fluid increases, compressing the surrounding sacral nerve and bone, which can cause bone destruction in serious cases. If the cyst continuously compresses the surrounding nerve fibers, serious patients will have sensory and motor dysfunction, and even abnormal urinary and fecal functions. Magnetic resonance imaging can confirm the diagnosis of sacral cysts. For the treatment of sacral cyst, the only effective method is surgery, under which the cyst is removed under microscope and the pressure of the cyst on the nerve is released after releasing cerebrospinal fluid, so as to achieve the treatment purpose, the operation time is short, the trauma to the patient is small, and the minimally invasive technique is the ideal method for treating sacral cyst.