I owe Dr. Zimmer and the Penn team my life. They performed their Professions at a superhuman level of expertise and caring that only occurs when everyone is on the same page AND the same paragraph. We in this area are truly Blessed that we have such fine care available at Penn. These women and men are not just following the book, but they are (in my personal opinion) "writing the book" with their abilities to meld technology and cutting edge medicine into solutions for all of us. I can't THANK YOU enough. BL 2009