The podcast explores the use of nerve blocks for low back pain, comparing the effectiveness of lidocaine injections, radio frequency, and laser treatments. A study showed that laser nerve blocks had better long-term results. They discuss targeting the dorsal root ganglion for pain relief and the potential of laser therapy as an alternative to nerve blocks.
Laser nerve blocks showed better long-term efficacy for reducing low back pain compared to lidocaine and radio frequency nerve blocks.
Laser therapy on the dorsal root ganglion can reduce low back pain by altering the local inflammatory response and increasing the production of endogenous opioids in the body.
Deep dives
Types of Nerve Blocks for Low Back Pain
Nerve blocks are commonly used to reduce low back pain, but they do not address the underlying issue causing the pain. They function by interrupting the pathway of pain signals, targeting the dorsal root ganglion (DRG) near the spine. The three main types of nerve blocks discussed in the podcast were radio frequency nerve blocks, lidocaine nerve blocks, and laser nerve blocks. While all three can provide temporary pain relief, the pilot study mentioned in the podcast revealed that laser therapy on the DRG showed the greatest and longest-lasting efficacy, with 70% of patients reporting a 50% reduction in pain lasting one month.
Comparing Laser Therapy to Other Nerve Blocks
The study compared the effectiveness of laser therapy, lidocaine nerve blocks, and radio frequency nerve blocks in reducing low back pain. It found that laser therapy had better immediate and longer-term pain relief compared to lidocaine and radio frequency procedures. In the study, laser therapy showed a higher percentage of patients experiencing a continuing 50% or greater reduction in pain after one month than the other two procedures. Additionally, 70% of the laser therapy patients were able to immediately return to work and daily activities, while only 30% of lidocaine and radio frequency patients could do so.
Mechanism of Laser Therapy for Low Back Pain
The podcast discussed how laser therapy on the dorsal root ganglion (DRG) can reduce low back pain. Mechanistically, the light from the laser alters the local inflammatory response and increases the production of endogenous opioids in the body, resulting in pain reduction. Laser therapy also has the ability to alter the cellular response to pain. These effects may explain why laser therapy showed better pain relief than lidocaine and radio frequency procedures in the study. Ongoing research is being conducted to explore non-invasive methods of delivering laser therapy for low back pain.
Nerve blocks are a common method to treat low back pain, particularly chronic low back pain. Can photobiomodulation therapy have results equal to RF or lidocaine nerve blocks? In this summary of a 2016 study on lidocaine injections vs radio frequency nerve blocks vs laser nerve blocks, results showed that laser nerve blocks had better long-term results.