Hello Helen. I absolutely agree with the comments by Profs. Laakso & Liebano. Here is my approach to incorporating published evidence into my practice. I search for studies in the same or comparable soft tissue condition (or for pain or wound healing, etc.) that first, use wavelengths available to me, and second, that have similar beam apertures to my lasers; if the match is reasonable I then try the study energy dose (J). (As noted by the other Profs, the greatest factor in determining outcomes may be the laser spot size - penetration reduces with spot size). If the match is poor I use a titration approach, i.e. get the best possible match from the literature and over a few treatments increase or decrease J per point to see if I can get a positive outcome. I have success with this approach & hope it might work for you. BTW on scar tissue I have had very obvious softening and area reduction (measured) using an 830nm, 50mW laser with 4 mm diameter aperture (0.126 cm^2) and 30J/cm^2.