I have hyper mobility, mainly affecting knees, elbows, ankles and wrists. It takes so little to tweak my joint and irritate nerves. But no dr have really offered a solution. Now I am dealing with chronic nerve pain following two left knee surgeries in 2010. 2011 was a rough year for pain and 2012 is looking more of the same. I don't have an answer to you PFR wearing out early due to laxity. I sure hope not. My surgeon spent a lot of time in surgery tightening up my knee and I feel stabble with it. Only time will tell. I am due for PFR on the right as soon as I can manage with the left. I want the pain managed first... Good luck