Table 2 Randomised LLLT-trials excluded for not meeting criteria of valid procedures for active laser and placebo laser treatment.
Study by first author | Method score | Wave-length | Application technique | Result | Reason for exclusion |
|---|---|---|---|---|---|
Haker [43] | 6 | 904 | Tendon | No significant differences | Photograph in trial report shows that the laser probe was kept in skin contact and thereby violated the manufacturers' recommendation of a keeping the laser head at a distance of 10 cm. This violation caused a central blind spot of ca 3 cm2 which left the tendon pathology unexposed to LLLT (See Figure 2) |
Siebert [44] | 6 | 904 + 632 | Tendon | No significant differences | Active laser treatment to the placebo group received red 632 nm LLLT, which we calculated to be (2.25J), which again is an adequate LLLT dose. Consequently this trials lacks a placebo or non-laser control group |