From the data I have seen, on average, the big drop off occurs in male athletes after the age of 70, and for female athletes after menopause. Before that, on average, it is a slow decline. Different sports have different degrees of drop off.
On the other hand, the averages tell you nothing about an individual.
To give you another perspective on recovery. Quite a few years ago, when I was 60, I had a bicycle accident. I broke my left collarbone, and destroyed my rotator cuff. I could not even put on a pair of socks.
Within two weeks I had complete use of my rotator cuff back, and four weeks after that I was back riding my bicycle. I was told I recovered as if I was about 20 years younger.
You will just have to see how it goes for you.