Mine does too and its on the side it hurts it I walk
I have the same thing and I believe it's called a Saddle Bone Deformity or a bone spur. Look at pictures of it on google or something. If it doesn't look like that, well, I tried. Sorry.
On top of your foot or on the bottom? Or is it on the side? Does it hurt? Is it keeping you from putting on shoes\socks? How far is it exdented from your foot? Can you use that foot normaly? Is their shooting pain down your leg from your back? Is their numbing in that leg? Is that leg numb? Does that leg have cronic cramping? Does it twitch uncontrollably? Can you move all your toes? Can you grip your toes without cramping? Does your heel hurt? I need more info before I can answer this