I would check with your vet. Most pain meds make you feel better therefore they may cause Teddy to be more active and cause more harm than good, especially so in this case as it his leg that is sore & he does not need to be active.
As long as he isn't in a lot of pain I would probably wait it out.

Did the vet say if it is ok to apply neosporin to the wound to help it heal faster?