Hurt my knee in a fall. Nothing broken, but it swelled up to an extraordinary size. I've been icing and keeping it mostly imobilized but it's 5 days later I've still got a lemon+-sized protrusion (better that than melon!) and I'm wondering when I can ride again. I biked 5 miles after the fall. Don't suppose that was too smart. But I'd love the wisdom of the over-50s out there.