I learned the pad he sliced is called the Dew Pad.
Not to be confused with the dew claw.

This was the pad all by it's self up the back of his leg.
Not on the bottom of his foot.

Not to many instructions for home care, it's not on the bottom of his foot, so it's not bothering it very much when he walks on it!
He does have to take antibiotics twice a day (nothing a piece of cheese can't hide )