The science is much better these days I’m 68 and just had the second hip done. The issues are overall physical condition including bone density active rehab and avoiding infection and pneumonia
Much better outcomes than even ten years ago
Situations like yours remind me that God's been WAY better to me than I deserve. At 71 everything still works, outside of an occasionally cranky knee that I'll get looked at some day. I survived a heart attack in 2011 and will be on the rec b'ball court tonight chasing after those 40-50 year old kids!
The science has improved, though I had in mind several people - the youngest of which was 89. You’re a spring chicken compared to them.