Is there a long-term risk of performing Single-Handstands daily?

I read a comment about a guy who had messed up his right-arm from doing a lot of single-handstands on his fists, and seeing as how single-handstands is part of my daily workout routine, i got a little concerned.

I'm not doing it for extended periods of time. Just 3-5 "reps" per workout pass, however i work out every single day. I don't use my fists, but still.

Is there any long-term risk to this that i should be aware of?