Almost certainly a torn meniscus, sayeth the Doctor. And he sayeth further, you can let it go, take NSAIDs, have a cortisone shot, or have surgery.

I chose the shot and will revisit the problem later, if I survive until then.

Yes, a UTI. E. Coli. She's on cefalexin and cranberry extract, and she's stashed on the new mattress that arrived today instead of tomorrow when it was expected.

Yes, a new mattress. I ordered it about a week ago when I found that wires from the springs of the old one were stabbing me in the back of the leg when I got up.