Lower back surgery is actually a misnomer. What we call “lower back surgery” is specifically lumbar spine surgery or lower spinal surgery.
There are only a few indications for lower spinal surgery. These are…
- When conservative treatment is not effective in reducing pain
- When there are signs of focal neurologic deficits, such as leg weakness, sexual dysfunction (impotence), loss of bladder or bowel control (occurs when central lumbar disc herniation causes spinal abscess or cauda equina syndrome)
- When there are signs of progressive nerve problems caused by herniated discs
- Spine injury
The various types of lower back surgery each treat a specific cause of lower back pain. A patient may require only one type of surgery, but others may also need spinal fusion to further stabilize the problematic site.
Here are the most common types of lower spine surgery…
- Discectomy/Microdiscectomy: The procedure involves removing the herniated portion of a disc that has impinged upon a nerve. Discectomy serves to relieve irritation and inflammation on the compressed nerve. The procedure may involve full or partial removal of the posterior portion of the affected vertebra (called the “lamina”) to be able to reach the ruptured disc.
- Laminectomy: The procedure involves removal of herniated discs or bone spurs that press upon a spinal nerve. Laminectomy also involves enlarging the spinal canal in order to relieve pressure on the nerve caused by spinal stenosis and spondylolisthesis. This procedure may be performed with spinal fusion in order to achieve stabilization in the affected site.
- Foramenotomy: As its name denotes, it involves the removal of bone and other tissues that impinge upon the nerve as it exits the spinal column via the intervertebral foramen. This is performed when the nerve is being compressed by more than just a herniated disc.
- Spinal Fusion: This involves permanently connecting two or more bones in the spine by using screws, plates, or by creating bony bridges between vertebrae with bone grafts. This procedure aims to give the spine greater stability and thus reduce painful motion between vertebrae in causes of injured and degenerated discs and spinal fracture.
- Vertebroplasty: This procedure involves injecting bone cement into compressed vertebrae to help stabilize fractures and thus reduce pain in compressed and fractured vertebrae.
- Kyphoplasty: A variation of vertebroplasty, this procedure first involves the insertion and inflation of a balloon in between compressing vertebrae in order to expand the bone to its normal size. Cement is then injected to fill the empty space. Kyphoplasty is commonly performed in patients suffering from back pain as a result of osteoporotic and compression fractures, and can help prevent spinal deformities (such as scoliosis, kyphosis and lordosis) and height loss.
- Spinal cord stimulator implant: A minimally-invasive technique which involves implanting a spinal cord stimulator that relieves pain and other symptoms of sciatica and other chronic radiculopathies (diseases of the nerve roots).
- Lumbar Artificial Disc Replacement: A new type of surgery being explored as an alternative to spinal fusion. The procedure involves the implantation of artificial discs that would prevent painful compression between two vertebrae because of an injured or degenerated disc.
Clinical trials at the present time have yet to show conclusively the effectiveness of spinal surgery in the treatment of lower back pain. What most studies have shown is that the benefits of spinal surgery are limited when treating degenerative discs with symptoms of spinal pain. Also, there is an increased risk of complications in the use of spinal implants, including risks of blood loss, nerve injury, infection, and even repeat lower back surgery, in comparison to spinal fusion.
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