Originally Posted by McBTC

Sound like -- from what I just googled -- that repair of the lesion is not related to implant surgery. Hip implants apparently have progressed to the point that some say experts could do them with their eyes closed. Knees are harder and I think shoulder implants are harder still (not sure where ankle implants figure in except that they may be more rare).

As a non-expert, an interesting factoid about knee TKA and revision surgery, as I understand it from experts in the field, soft tissue problems generally are not the big problem for the practiced surgeon; however, as soft tissue goes, I learned that you need to work the hamstrings from the beginning, even if you are not going into the surgery with hamstring limitations (called extension contractures) as flexibility there is the easiest to lose and hardest to get back. That is why they like it if after surgery you try to extend your leg when seated by resting your heel on a towel (which can be painful at that time).

We mostly were talking above about flexion contractures, according the terminology used in this interesting paper on the subjects:
As it turns out, I may have a better idea over the next 6-8 weeks or more based on some anecdotal experiences of a 2-stage knee revision recipient who happens to be a highly motivated cyclist, concerning the amount of flexion required to accommodate--e.g., 165 mm crank arms.