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Normal anatomy:

The spine is made of bones (vertebrae) separated by soft cushions (intervertebral discs).

Normal anatomy


Lumbar (lower back) spine disease is usually caused by herniated intervertebral discs, abnormal growth of bony processes on the vertebral bodies (osteophytes), which compress spinal nerves, trauma, and narrowing (stenosis) of the spinal column around the spinal cord.

Symptoms of lumbar spine problems include:

  • pain that extends (radiates) from the back to the buttocks or back of thigh
  • pain that interferes with daily activities
  • weakness of legs or feet
  • numbness of legs, feet, or toes
  • loss of bowel of bladder control



The surgery is done while the patient is deep asleep and pain-free (general anesthesia). An incision is made over the lower back, in the midline.



The bone that curves around and covers the spinal cord (lamina) is removed (laminectomy) and the tissue that is causing pressure on the nerve or spinal cord is removed. The hole through which the nerve passes can be enlarged to prevent further pressure on the nerve. Sometimes, a piece of bone (bone graft), interbody cages, or pedicle screws may be used to strengthen the area of surgery.



Patients usually require physical therapy to optimize spinal mobility after lumbar spine surgery. Results are variable depending on the disease treated.


Review Date: 5/12/2008
Reviewed By: Thomas N. Joseph, MD, Private Practice specializing in Orthopaedics, subspecialty Foot and Ankle, Camden Bone & Joint, Camden, SC. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.

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