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Stem Cells to Relieve Low Back Pain?

Early study says maybe, but experts say much more research on treatment is needed
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WebMD News from HealthDay

By Brenda Goodman

HealthDay Reporter

FRIDAY, April 12 (HealthDay News) -- Medical researchers are trying a new treatment for low back pain. Their hope is that harvesting and then re-injecting the body's own bone marrow -- which is rich in stem cells -- may repair worn-out discs in the spine.

In a small new study, the approach appeared to be safe -- and none of the patients reported that their pain got worse after the procedure.

But both the doctors who are testing the technique and outside experts say much more research is needed before they can say whether the treatment offers real relief.

"I tell everybody that this is experimental, with a capital E," said Dr. Joseph Meyer Jr., an anesthesiologist and pain medicine specialist at the Columbia Interventional Pain Center, in St. Louis. "We don't know if it works. I do believe that it's safe, but it might not do anything for you."

For the study, Meyer and his colleagues reviewed the case histories of 24 patients who were injected with their own bone marrow aspirate cellular concentrate (BMAC). Bone marrow concentrate contains adult stem cells, which have been called the body's own repair kit because they can change into -- and potentially heal -- different kinds of tissues.

Meyer's patients reported suffering from chronic low back pain for anywhere from three months to 12 years. Imaging tests showed that all the patients had some evidence of degeneration, or damage, to the discs that cushion the bones of the spine. Disc degeneration is common with age, and it is thought to be a major cause of low back pain.

Many times, exercise and weight loss can help people with persistent low back pain. But if conservative approaches fail and the pain becomes debilitating, Meyer said, the next option is invasive spinal fusion surgery.

"Fusion is a big, big step with questionable effectiveness," he said. "Often, you're back in the same boat a year later."

Meyer said he offered patients the bone marrow treatment as something to try before resorting to surgery.

For the procedure, he used a long needle to extract bone marrow from the back of the hip. The bone marrow was spun in a centrifuge to concentrate the cells and then injected into the space around a damaged disc. Meyer said the treatment costs a few thousand dollars and is not covered by insurance.

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