Used to play a lot of racquetball back in law school at the campus gym - they had about four courts. Walked downstairs one day and was walking to our court when we noticed a group of about five guys all standing around in a circle on one of the courts. Naturally, we walked in to see what was going on, and there was a guy laying on the floor, much like in the video, with bone jutting out where his ankle should be.
It was fairly horrific in person. Apparently he was running sideways and came to a hard stop and his bone kept going. We didn't play that day. Freaked me out.