95%of patients are happy with their outcome, particularly in pain relief.
The important point is to have a surgeon with a good track record (most do) who performs hip replacement on a regular basis. You don't want to have a general Orthopedic surgeon who performs only a few hips per year.
The anterior approach has a more rapid recovery period but is more technically challenging and a newer procedure, so you need to again have a surgeon who is familiar with that procedure.
I also have arthritis at a relatively early age in both hips and I had my right replaced in Oct 2013. My surgeon was not familiar with the anterior approach, so I had the traditional, posterior approach. Regrettably, I am one of the unlucky 1-2% who have chronic pain from post-op trochanter in bursitis (which they cut through in the posterior approach). My pain is improving and structurally, my new hip is perfect.
I can play soccer, tennis, basketball, bike, hike and swim but I'm not supposed to run anymore because it will cause the hip to wear out sooner.
When I need surgery on the left, I will definitely try to get the anterior approach. Good luck!
HH MD