@emersonf To tag someone here (send them an alert that you responded to them) put an @ in front of their screen name - see how I did your name?
While it is ultimately up to the surgeon to determine if a patient is appropriate for a bilateral hip replacement, it is, IMO, the best way to go if one has 2 very bad hips! It was my surgeon who recommended doing a BTHR for me - I had one hip that was so bad it had fused to my pelvis(ball of femur was so worn down and misshapen my body decided it was broken so grew new bone to "fix" the problem) and the other was bone-on-bone. While the deterioration was due to arthritis not AVN it still was very painful and debilitating. And I am very, very glad to have done both hips at same time.
The reasons my surgeon gave me for the BTHR were:
1- I was 64yo, in generally good health, had had no problems with anesthesia from previous surgeries and he felt that it would be less of a risk for me to have just one surgery/one session of anesthesia and one hospital stay. (back then, before COVID, hip replacement patients usually stayed in the hospital for several days - now many go home the same day as surgery). There are risks with any surgery - though most rarely occur.
2- I would have just one period of healing and recuperation
3- I would be able to regain a normal gait faster as I would not have to limp on unrepaired hip between surgeries.
4- He felt he would be able to better assure that both legs ended up the same length and thus avoid a leg length differential problem that does some times occur when hips are replaced at different times.
Every person's history and experience with hip replacement is different so it is impossible to predict how exactly things might go for you. But BTHR is definitely worth considering if surgeon is willing to do that.
The link to my post op hip thread is in my signature - it's old and I don't up date it much. Feel free to read that and any other Bilateral thread you find.