Bite by dog just above my left knee 10 yrs ago. the scar hurts if pressure is put on it. can scar tissue be removed?

Maybe!: Consult with a plastic surgeon to see if revising the scar is an option. You cannot remove a scar completely (just as you cannot undo an injury to the skin), but you may get one that heals better and is smaller and less painful, if possible.

Yes, sometimes: Has this been examined? It could even be something as bizarre as a broken tooth that has grown into the wound. If not, certain laser treatments can be effective.