This info is about tendinosis (formerly tendonitis); eg. tennis elbow, carpal tunnel syndrome, various Repetitive Stress Injuries, Achilles tendon problems, etc.
The article is heads above anything else I've found in hours of searching in terms of practicality and straight talk. Other articles on the site may be of similar quality but I haven't had time to read much more.
http://saveyourself.ca/articles/repetitive-strain-injuries.php
As always, my usual advice: If you find stuff on the web you value, save it to your machine, don't just book mark it. Things disappear sooner than you'd think and w/out warning.