total hip replacements and racing

Hi all of you swimmers out there. I am a 66 year old female competitive swimmer and will have a total hip replacement next month. I would love to hear from any of you with info re if and how this surgery altered, impeded, helped your swimming, especially *** stroke sprinting. At present my hip has cut down on my swimming drasticallyand I would love to train hard again and compete in hte next Short Course Nationals. I would really appreciate any response. Thank you Susanne