3B vs Class IV Lasers
Laser overdose - How much is enough? How much is too much ?
Lies, damn lies and no statistics (they call it marketing)
How much laser is enough? and how much is too much ?
In a recent systematic review and meta analysis of laser therapy on tendinopathies
(Tumilty et al), 11 out of 20 studies failed to produce a positive result. The reason identified
for the ineffective studies were that the laser beams were too strong (the irradiance was
too high for this particular pathology). Most clinicians are rightly confused about which
laser to choose and which dose or technique will work.
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LLLT companies may be no better than Big Pharma
It is a popular sport in the LLLT industry to sneer at Big Pharma for their side effects and
marketing practices, but the LLLT industry is far from criticism itself. Whilst LLLT side
effects are hard to find, marketing overstatement and misdirection are common place.
In July's literature watch is a paper titled "The Effectiveness of Therapeutic Class IV
(10 W) Laser Treatment for Epicondylitis". This small study showed that 10 Watt Class IV
laser (mixed 8W 970nm, 2W 810) was successful in reducing pain and improving function
in an RCT with 15 patients, and that there was good statistical significance at 6 months
following a course of 6 treatments.
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