Not truly unique. The muscle is the vastus muscle and many knee surgeons do a "SubV" or "subvastus" approach which is what Jiffy knee does.

I am scheduled in ten days to get a new knee from a surgeon (Jimmy Chow) who uses the subvastus method. I am also hoping that the implant will be bicruciate retaining. My ACL and PCL look good on the MRI but I am concerned about the dislocation and whether it is too extreme for a bicruciate implant. It would be great if I could keep my ACL and PCL.

My has been to find a skilled surgeon using the subvastus method who has successfully done it at least hundreds of times using a robot (mine uses the CORI robot). Method, skill and experience.

Of the three, I believe that successful experience is the most important. I was chatting with my surgeon who is the principal inventor of the newest approach to hip replacement (superpath -- he did my left hip and I had zero pain from the surgery) and, although he is the inventor of the newest and best method of hip replacement, he also believes that the experience requirement is the most important.

A friend of mine is scheduled for a knee replacement with a Jiffy Knee surgeon here in Scottsdale. I mentioned that to my surgeon who commented that this Jiffy Knee surgeon in question is a good one with lots of experience but they might not all be.

So...approach (subv or equivalent), skill and lots of successful experience. Things can still go wrong but this will maximize your opportunity for a successful and relatively painless experience.