The MRI has spoken.

I saw Dr. Daly this morning and the MRI confirmed a "medial meniscus horizontal tear." I actually feel good, and have started to walk without the cane. The swelling is way down and I seemed to have good range of motion this morning when Dr. Daly tested it. So the prognosis for now is to take it very easy and come back in one week. At that time, he may shoot some more cortisone in there to relieve pain, swelling or inflammation; or prescribe physical therapy, which would be a conservative treatment. He has not ruled out surgery yet, so I'll just have to be incredibly careful to ensure I keep healing without surgery.

And look at the bright side: the rest of my body, including my brain, works just fine!