http://www.sportsmd.com/SportsMD_Articles/tabid/970/id/279/Default.aspx?n=what_is_runner’s_knee
Being a runner, I found this article interesting and helpful for things I should be aware of. But I would like other runner’s to know another form of rehab is pilates. The reformer puts you through non-weight baring exercises that are still strength building. You can keep your legs mobile without putting the strain on the knee.