Dec. 1, 2011 (Chicago) -- An experimental treatment that involves spinal injections of ozone gas and steroids relieved pain in over two-thirds of 327 people with back problems related to a herniated disc.
This condition occurs when the cushions, or discs, that serve as shock absorbers for the spine become inflamed and bulge or break open. When inflamed, discs press against nearby nerves. People with this condition can experience pain, numbness, and weakness in the back, buttocks, and legs.
None of the people in this study had been helped by other nonsurgical therapies, and supporters say the new therapy could become a standard treatment for such patients. But a back pain specialist who spoke to WebMD says that further research is needed.
In the study, 119 people (37%) reported no pain at six months. About another third reported less frequent episodes of low back pain, "maybe once a day," says researcher Thomas Lehnert, MD, an assistant professor of radiology at Frankfurt University in Germany.
Another 22% reported only a little improvement, with pain persisting. And 7% had no improvement or their pain got worse. A few patients resorted to back surgery.
Still, ozone therapy could even help many patients with unrelenting back pain to avoid surgery, Lehnert tells WebMD. Before the treatment, patients had tried everything without success and were considering an operation, he says.
Studies suggest that ozone therapy works by reducing inflammation, shrinking herniated discs, and relieving pressure on the nerves bringing pain signals to the brain. The steroid further reduces inflammation.
Lehnert presented the findings here at the annual meeting of the Radiological Society of North America.
As many as 80% of adults in the U.S. suffer from lower back pain at some point in their lives, and for many, the cause is a herniated disc.
About 90% of people with herniated disc-related pain will improve within two months without surgical treatment.
Of those who don't improve, only 10% will need surgery. "The vast majority improve with physical therapy, [steroid] injections, chiropractic treatment, etc.," says A. Nick Shamie, MD, of UCLA Spine Center, a spokesman for the American Academy of Orthopaedic Surgeons.