My mom had 3 hip replacements, here in the U.S. She was 67, when she had the first 2, and 71, when she had one of the replacements replaced.
There are 2 kinds of replacements done in the U.S., or at least there were in the 80s. The old fashioned kind, designed for old people, the replacement hips are cemented on to the bone. The new style, no cement is used, and the bone is supposed to grow into the replacement. Obviously not a good idea for a woman over 60.

If you have to have the surgery, have it in the winter. Mom had her second hip replacement in July, and I damn near commited matricide before it was over. February is a great month to spend in bed. July is not. Mom was not a pleasant person. Of course afterwards, Mom was back to her garden club, and doing city tours, and traveling, and her book club, and well you get the idea.