How to choose the right running shoes?

What is the right way to choose a running shoe, especially for an injured runner? Dr. Ian Griffith is a sports podiatrist, his information can be found here, and recently posted this great video regarding how to choose the right running shoe.   I know the video is pretty long, but Dr. Griffith is very evidenced based and gives great quality insights for his treatments.  Enjoy Regards, Ron Miller, DPT, OCS