A British neurosurgeon I met on a tour in Australia asked if I had slipped a disk. In fact, I had, about a year before the tendon gave way, and the sciatica had appeared near the ankle that was later afflicted. He also asked what it's like to have a rare disorder. It's a little frustrating, since we don't know much about it. We also aren't very good at fixing it.
Tendons take a long time to heal.
There will be less flexibility, especially on uneven ground. Presumably, I won't be on the senior league volleyball or basketball teams, though there never was much chance of that any way. I'll be happy if I can walk and bicycle without problems. The repair is clearly a kludge. It generally involves moving and repairing various tendons to balance the foot.