The word is that he fell on his walk. Probably some uneven patch of ground. The walker seems to have stumbled as much as Dad.
Early reports are weakness in the hip but no real pain. That’s a good sign. We’ll see where it goes from there. I understand the ambulance personnel had the opportunity to be regaled by Dad’s wit. To keep your wit and wits about you is always a good sign. So far the good outweighs any other consequences. And that’s good!