This article details the problems that former Cincinnati Bengals linebacker Reggie Williams had from playing on a torn PCL and ACL. While it did not affect him during his playing career it had a terrible toll on his knees after.
A quick picture of his knee now.
Dont look if you're squeamish
Like Williams, Merriman is gambling his future health and security in order to get more of what he wants now. A dangerous attitude that may have terrible ramifications.