Hal, Happy to hear that your anterior surgery went well ... When my wife was preparing to have her hip replacement last January, we consulted with an ortho surgeon we have known since he and our son were in grade school ... This doctor is 51 years old, served with the NE Patriots ortho team through a Harvard Fellowship just after med school, and now has a highly successful practice in NJ ... If his practice was closer we would have had him do the surgery ... His advice to my wife was to go with the posterior for a couple of reasons:
1) the anterior does not have as much clinical data behind it;
2) while the incision is smaller, the prosthesis is still the same size and complications can occur.
She went with the posterior and is doing quite well.

It is all in the hands of the surgical team, and in the post-op rehab ...

I'm very glad she did very well. You'll notice I did not make a specific recommendation and just encouraged full research to make a personally informed decision. I'm not a doctor and I don't play one on TV.

Yes, everyone has to make the decision they feel is best for THEM ... just like buying a KB ... only the stakes are higher ...