I definitely had bleeding.
This got bigger and blacker and starting from just below my groin and over the next couple of day moving down my leg giving me swollew and bruised looking ankles.
Injury was cause by the chain coming off the bike followed rapidly by me coming off the bike and using my knee to stop my entire body. Must have been reasonably hard as the people watching all went quiet until I moved rather than the normal laughter.
No real pain in the joint, just tightness from the swelling which is much relieved today. The skin is very sensitive though, short rubbing against it actually hurt.