Ulna bones protruding on both wrists

I have ulna bones sticking out on both of my hands to the point of tearing up my skin.

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No injuries, no falling, the only physicals strain I had on them were 20 pushups a day. I stop doing it because I have pain in wrists during pushups now. Other than that, no pain only ugly protrusion of ulna bone and clicking sound during wrist movement. Does anyone know that it is, and how to stop ulna to sticking out so badly? Anyone’s answers shall be highly appreciated .