<human>: Condense the text into a few key points

A few weeks ago I went out for a long run and had to stop around mile 5 because my knee hurt so bad - the pain came on pretty suddenly to the point I was limping, even though I had never had that problem before (the pain is under my kneecap to the very very left side, around my IT band, and is worse when I go downhill). I went to the doctor, and he diagnosed me with runner's knee and told me to see a physical therapist. After several weeks of rest and physical therapy, I decided to try running only to be stopped by the pain about a half mile in. My therapist also noticed some clicking/popping in my knee when he put some weights around my ankle and asked me to do some leg extensions. I plan on making an appointment for an MRI, but could this be symtoms of a torn meniscus rather than just runner's knee?
<bot>: Hurt knee while running, diagnosed with runner's knee. After a month of rest and physical therapy I don't seem to be getting any better. Noticed popping in my knee during latest therapy session. Possibly a torn meniscus?