Hey StevenF, it's cool to hear that it worked for you. That's something that's becoming more popular in PT clinics, and research is starting to point toward its efficacy too. Unfortunately reimbursement for it is shit, so sometimes it's wrapped into an electric stimulation device, which I think is silly.
Photomed Laser Surg. 2010 Feb;28(1):3-16. doi: 10.1089/pho.2008.2470.
Low level laser treatment of tendinopathy: a systematic review with meta-analysis.
Tumilty S, Munn J, McDonough S, Hurley DA, Basford JR, Baxter GD.
Centre for Physiotherapy Research, School of Physiotherapy, University of Otago, Dunedin, New Zealand. firstname.lastname@example.org
LLLT can potentially be effective in treating tendinopathy when recommended dosages are used. The 12 positive studies provide strong evidence that positive outcomes are associated with the use of current dosage recommendations for the treatment of tendinopathy."