I have a possible growth in my left wrist that I noticed about 6 months ago when it was tiny and painless. This lump, or growth, is located just about where the wrist meets the hand / base of thumb. If you were to take my pulse you would put your finger in the same exact position of my arm as the growth, only an inch and a half over. While it (the lump) has gotten slightly bigger, it has gotten more painful. Especially with movement of my thumb. It is as hard as bone itself but is as sensitive as your eyelid would be in a dessert sandstorm. I've broken a lot of bones in my body over the last 37 years but none in this limb. (That I am aware of.) I do recall though, earlier this year and prior to my wrist getting my attention, I did get "swept" off feet so fast that all I could do was brace myself with my hands. One second I was walking vertically, the next second I looked as if I was half way through doing a push-up. I winced at the pressure on my wrists but thought nothing of it again, till now. That is the only activity I can think of that may have helped bring this issue upon me.