Who wants to learn about the shoulder, knee and spine? ADVERTISEMENT 388 viewsJune 30, 2012 0 Chris0 June 30, 2012 0 Comments 4 Answers ActiveVotedNewestOldest 0 Elizabeth Posted 0 Comments Hi Chris, I would like to learn more about all three. Elizabeth You are viewing 1 out of 4 answers, click here to view all answers. Register or Login