Ed Coan is interviewed about the knee injury he sustained while squatting and his subsequent recovery. You've probably seen the video which captures the injury. If you haven't, here it is. Asked if he was scared about hitting the old weight, Coan said he was at first, but isn't any more. Coan says that his next meet may be during the summer of 2006. He suggests that it also may be his last.
A couple of other powerlifters are also interviewed about injuries sustained while lifting and their subsequent rehab.
Their advice on returning to powerlifting after an injury are to take your time coming back, train smart, stay positive and listen to your doctor.