I can comment as a PT that it is a very common treatment with relatively few cons other than it is not permanent and you can only get so many. The only con I can think of other than this is the potential for error during the procedure. The pros are it may relieve your pain for a while and buy you some time. Also when your hip pain is relieved you may find your back and other body parts feel better because you are not trying to compensate for the hip pain. Nowadays though a lot of hip replacements are done using an anterior approach. People recover a lot faster with this newer approach and don't have to worry about the traditional hip precautions of bending too far or crossing your legs, which can really limit you esp at first.