Could this allow for someone to have an advantage? I was reading Conor McGregor may have a slight advantage after breaking his leg due to a new special type of rod they attached to his leg that may make it more resistant to breaking.
https://sites.nd.edu/biomechanics-in-the-wild/2021/07/14/a-s...
Kicks are normally blocked with the lower leg in Muai Thai. This often results in shin-on-shin contact which can be very painful for both fighters. So the point isn't so much to prevent full bone breaks (which are very rare) as to toughen the bone enough to handle this abuse... and make sure it hurts more for the other guy than it does for you.
Anecdotally I've also met older folks who expressed wishing they'd done it sooner for knee/hip replacements. I also have a friend with a health issue that required both hips replaced at 25, and they expressed frustration at the recuperation and physical therapy process, and they dread the fact that they're young enough for the hip replacements to need replaced themselves in a few decades, an issue the older recipients generally don't have to worry about.
Anyway, that's just a long way in saying, "Do we have bionic hip implants 125% better than natural that anyone with means should get if they want?" and the answer being "Not yet"
Looking at pro athletes is sort of instructive; essentially none of them have returned to play after a hip replacement (Bo Jackson kind of, but in limited capacity). A few, most famously Andy Murray, have returned after hip resurfacing, so it's probably about as close to a natural hip as possible, but likely still a bit inferior.
Someone getting a hip replacement is getting one because their existing hip is substantially impaired.
Yes it's better than their situation immediately before the surgery. It's probably not better than when they were thirty.
Which is the precise reason we only do joint replacements after the joint is beyond repair. We don't do hip replacements on healthy 28 year old marathon runners. To do so would markedly reduce their quality of life in both the long and short term.
Again, most orthopedic patients will tell you that a replaced or repaired joint is never the same as it was when it was healthy. But living with such a damaged joint is so incredibly painful and difficult that anyone would choose surgery every time.
If your daily life is 9/10 pain, a 3/10 seems like a godsend. If you live your life with no pain, opting for surgery that leaves you with 3/10 for the rest of your life is a pretty bad decision.