Why do I have bad circulation?

I dislocated my right little finger when I was 16 (I am now 19), and ever since then my little finger has always been freezing cold compared to my other fingers, even my little finger on my left hand. I find it hard to move quickly, like if I were to try and clap one handed, my bad finger moves a lot slower than any of my other fingers, again including my little finger on my left hand. Is my hand broken forever :(