Keep in mind, we’re talking about a similar destination here but two different paths.
If you “choose” to have a hip replacement, it’s always planned. You’ve got some form of arthritis (osteo or rheumatoid) or avascular necrosis where the bone tissue has died and blood supply has been interrupted. The goal is to improve mobility by replacing a worn out joint. Surgery is planned and very methodical, robotic assistance is very common.
If there is a trauma (falls are most common), you are forced to have surgery urgently to reduce complications (clots, specifically). Internal fixation is almost always necessary with rods and screws for stabilization, and recovery is incredibly more challenging.
At your age, I would consider any other health factors you have first. Age alone isn’t a limitation- just ask yourself how debilitating the pain is and how much the relief can impact your quality of life. I’ve personally seen people as young as 14 (severe joint disease) and as old as late 80’s, but there are quite a few people that have had it successfully done late into their 90’s and even past 100 years old.
Sorry for the length, but I’m on a flight and have all the time in the world. Hope this helps.