I had a hip replacement about 11 years ago. My Doc too only did posterior. I read a lot before having the surgery, and knew of other folks who were having it around the same time. What I read indicated that posterior took longer time to heal, but had fewer complications. Anterior had more complications but took less time to heal. Three of us in rehab had the surgery around the same time. The other 2 had anterior. I had no complications. They did. Now, this is a very small "study" 😊, and it was 11 years ago. Things have changed so much since then! Check the research, then decide. I may need to have it on my other hip at some point, and I personally will go with the one that has less complications, if in fact there is still a difference. All the best to you!