First off, I have a pending appointment with doc, but I want to educate myself.
I fell forward, going about 30. My skis didn't release. Ok, so skidding on ground, all of a sudden my right ski wrenched the living daylights out of my knee. This was a hard "twist" that didn't feel right, but the twisting didn't reach that point of "breaking," "popping," or the like. I kept skiing for another hour, full speed (dumb, I know). But, an icy race course was out of question. Slush was fine.
Anyhow, I can't extend my leg without pain in the lateral region of the knee joint, where the biceps femoris tendon is, where the LCL is, and the medial meniscus (I am not a doctor so don't know what is what to the detail).
Here is photo of the bulging of a mass which feels like a muscle. This structure is normally "in" the knee, but bulges out when my knee is bent past parallel. I can feel this thing shift out, or something. Anyone know what this is? (I'm interested in what specific structure is swollen. The extent of the injury I'll leave up to the doc).
A quick googling reveals this is the lateral patellar retinaculum.