Update 3: It's been a year since my last update. Although my knee was in significantly less pain since my last post, it only got to the point where I could sleep and walk in a straight line without any pain. This allowed me enjoy walking around the block (I could actually walk about 10 blocks before my knee felt "done"), grocery shopping and doing light chores. I was grateful for all that, but I couldn't even ride a bike without ripping pain afterwards (pedaling ROM was too deep)...much less any other kind of sport activity.
So I took the risk and got a diagnostic arthroscopy. Haven't got the details from the doc, yet, but scope pics indicate my initial bike accident sheared a flap off my medial meniscus, gave me a chondral lesion on my lateral femoral condyle, scarred up/inflamed my fat pad and other stuff. I just cannot understand how such a slow and relatively light fall could do this much damage.
It's been 8 days since the scope. I was barely walking without crutches at day 5...but then I got too aggressive with ROM bending and it's been swollen like a water balloon and painful as hell ever since. Now, I can't bend it all, I'm back on crutches full time and am awakened several times a night by sharp pains or aching.
I will never trust a "negative" MRI again (I had 2 MRIs, each from different doctors, and they were both negative for anything other than mild tendinosis and slight effusion...they both failed so shockingly badly).