Investigating the Role of Pulsed Radiofrequency in Lower Back Pain Relief

Study Overview

A recent study conducted by Italian researchers explored the effectiveness of pulsed radiofrequency in alleviating lower back pain and sciatica. Lower back pain can be both severe and debilitating, with lumbar disc herniation being one of its leading causes.

Understanding Lumbar Disc Herniation

Intervertebral discs serve as cushions between vertebrae, functioning as shock absorbers that facilitate movement without bone friction. Each disc comprises a soft, jelly-like center called the nucleus and a tough outer layer known as the annulus. A herniated disc occurs when part of the nucleus breaches a tear or crack in the annulus, often leading to nerve pressure and resulting in sciatica, where pain radiates down the sciatic nerve to the legs.

Current Treatment Approaches

Conventional treatments for herniated discs typically involve conservative methods, including over-the-counter pain relievers and corticosteroid injections aimed at inflamed areas of the spine. While effective for some, many patients do not respond to these treatments and may ultimately require surgery, including disc removal.

Exploring a Minimally Invasive Alternative

In light of these challenges, Italian researchers investigated a new minimally invasive procedure as an alternative for patients unresponsive to conservative treatments. The study was presented at the Radiological Society of North America’s annual meeting in November 2018.

CT-Guided Pulsed Radiofrequency Technique

The technique, known as CT-guided pulsed radiofrequency, applies energy pulses from a probe directly to the nerve roots near the spine that transmit pain signals. This method stimulates the nerves, significantly reducing inflammation and leading to pain relief.

Study Design and Results

The study included two groups for comparison: one with 128 patients suffering from lower back pain due to lumbar disc herniation who had not responded to conservative treatment, and another group of 120 patients receiving CT-guided steroid injections three times without pulsed radiofrequency. The procedure for the first group was performed under CT guidance for ten minutes.

After one year, those who underwent the CT-guided pulsed radiofrequency treatment reported greater overall pain improvement compared to the steroid injection group. Additionally, patients receiving the pulsed radiofrequency experienced quicker relief from leg pain and a higher rate of perceived recovery—95% compared to 61% for those solely receiving steroid injections.

The study further demonstrated that combining pulsed radiofrequency with steroid injections yielded better results than either treatment alone, providing longer-lasting pain relief and inflammation reduction.

Conclusion: A Safe and Effective Treatment Option

The findings suggest that pulsed radiofrequency is a superior alternative to conservative treatments for patients with lower back pain caused by herniated discs or sciatica. This rapid and effective procedure is associated with fewer adverse effects compared to conventional pain medications and steroids. Remarkably, only a single 10-minute treatment was effective for a significant number of patients.

Now, this minimally invasive procedure is available to patients with herniated discs and sciatica who have not responded to standard treatments, potentially helping many avoid surgery—the only other option available in some cases.

References

Pulsed radiofrequency relieves acute back pain and sciatica. EurekAlert website https://www.eurekalert.org/pub_releases/2018-11/rson-prr111318.php. Accessed January 25, 2019.
Photo credit: Radiological Society of North America https://www.eurekalert.org/multimedia/pub/185960.php?from=412249.