I agree with checking with the Dr., but so far I haven't had any negative effects of riding again after my crashes.
I have ruptured a bursa in my left knee too, crashing on ice, and my Drs reaction was, "It'll regrow" and he gave me the thumbs up to keep riding.
I finished the last 100 kms of a 200K brevet, a year ago, with a separated shoulder, torn up legs (mostly my left knee & area), and a concussion ... and then attempted a 400K brevet a few days later ... and that didn't delay my recovery too much.
I tore up my left knee badly on a crash on gravel during my 2004 Australian tour, and rode 100 kms the next day back to civilization again.
Now, all that said, although I did ride home after the crash where I cracked my ribs, I found I had to take a day off the next day. I tried to ride the next day, but the whole process of getting the bicycle down a flight of stairs was too much for me ... I ended up throwing up from the pain, so I thought it was best to rest for a day. That was probably partially a shock reaction.
But yes ... check with your Dr. to make sure you haven't done anything too serious.