I fell on my knee and the outer side of it.  I was on a crowded train and was unable to look under my pant leg, but right after it felt like I had blood running down my shin.  Got to work and my knee is swollen, red/ but not bleeding at all - what would be the cause of felling like blood is running down my leg ????
Hello, Are you able to weight bear on your affected limb after injury. If yes, unlikely to be a fracture, and it could be a hematoma/arthrosis knee joint. Apply ice, take rest and apply a crêpe bandage. Take anti-inflammatory medication for 3 dashes should help you