Warning: next paragraph is a little squeam-inducing.
Once I finally examine the wound...well, you know on an escalator step edge it basically has teeth? Well, there's an escalator-tooth-shaped hole in my knee, and a smaller one to its right. I took a couple alcohol pads to it and put on a band aid, and it was beyond stiff this morning.
I had to wait around the hostel until about 2:00 to see the doctor, and when I got up to head over there, it was still painful, but I could get around, so I skipped the appointment and headed downtown. It feels like bone bruises I've had before, and I'm perambulating a bit slowly, but am hoping to be more or less back up to speed for my last 2 days in Berlin.