I don't know but I'd like to find out and I think you would also.
I am conducting a study on disc golf injuries and I need DGers to participate. You simply need to log the number of hours you play and then if you have an injury, fill out an injury report form.
Check out the site at www.sportsdc.net/DGStudy
Also, reply to this topic with ways you think the sport can be made safer.
Dr. Doug Maxeiner