I fell backwards, however i m unsure what happened at this point if i landed on it or if it just bent the wrong direction. It now hurts to bend it at any degree more acute than 90 degrees, and i can t straighten it out all the way. The pain only stays in my elbow, and the pain is throbbing like. There is no bruising atm, and this is about an hour to 2 hours after the fall. I m not sure if its just sprain or something more serious.