You've got to get in the right light to really see the scar correctly, but if you look you can see

That index finger got split right down the middle all the way down to the first knuckle

It was hanging wide open, with one half fingernail on either side

All of the bones were PULVERIZED
and the doctors were insistent I understood the difference between pulverized and fractured

The bones were broken into tiny little splinters that went flying everywhere

So they had to use corpse bones and remaining pieces of my bones to fuse and grow back