Steroid use and tendon injuries

[injuryupdate]

This article, with anecdotal evidence only, suggests that anabolic steroid use is a risk factor for tendon injury, with the proposed mechanism that the muscle increases in size way out of proportion to the tendon, causing tendinitis and/or rupture:

http://sportsillustrated.cnn.com/si_online/special_report/news/2002/05/28/verducci/