Blew out ACL/MCL playing rubgy in 1986. Repair wore out (no trauma) and had ACL reconstruction in 1989 by nationally known doctor. Reconstruction again wore out within couple years. Had another ACL reconstruction in 1996, that time with orthopedic surgeon for a city's NBA and NHL teams.
Now considering a 4th as I get more active while nearing age 40...
The question is obvious: why do my ACL reconstructions wear out in couple years? Is it worth another try? I have no pain, wear my custom DonJoy religiously, don't play impact sports.