Actually I feel better today than I thought I would. As expected, my knee is sore but no swelling. The bruises will show up later probably. The ice pack (bag of frozen peas) and liniment helped.
Fortunately, I don't fall often. It's been over ten years since I fell, and that was a foolish downhill grass skiing incident with Brigit in my arms. I landed on the patio and jammed fingers, scraped knees and elbows, and complained a lot.
Maybe we can consider this a DWTS viewer/recapper injury.