Monthly Archives: May 2012

It must gall to have performed a controlled clinical trial for a year only to find at the end that your physics department had adjusted the active laser such that it did not perform as planned.

The trial by Tumilty et al (TITLE: Clinical effectiveness of low-level laser therapy as an adjunct to eccentric exercise for the treatment of Achilles’ tendinopathy: a randomized controlled trial) set out to deliver twelve treatments of 100mW/cm2 of 810nm laser for 30 seconds to 6 points (3J per point) on the Achilles tendon over a 4 week period, but something went wrong and the treatment failed to have any significant effect over placebo.

What went wrong: The university physics dept had been asked to adjust the 810nm 100mW, 2.5W/cm2 power density to 100mW/cm2. They achieved the 100mW/cm2 by expanding the beam, but unfortunately they also decided to reduce the aperture to 0.07cm2. This had two unfortunate effects, the 100mW beam became reduced to 7mW and the beam did not adequately cover the pathology. So only 0.21J was delivered and only a tiny part of … Continue reading →

I had a meeting with the Chief Exec of the UK’s premier cancer research hospital, last year. He was genuinely interested by my pitch about LLLT. He said I should meet his pain team to present data on Oral Mucositis (OM). Eventually a meeting was set and I gave my best to the Head of Pain Services. Lets call him Dr Fred. Dr Fred listened patiently then, when I had finished, he gave me some feedback: 1) he did not like the company logo 2) he accepts the mechanism of action but 3) LLLT achieves too many things and 4) he had to go to another meeting. A surgeon friend of mine offered to go persuade Dr Fred and they had two hour meeting. Dr Fred said he would pitch it to his team, but after a few weeks chasing for an update, he said that nobody was interested.

How can that be when (according to the article in this months literature watch by Rene-Jean Bensadoun and Raj Nair) there is no consensus on a … Continue reading →