Injured toad... got stepped on:(

[Charlieamanda]

For the past few weeks we've had an American Toad hopping around on our deck, where the bug zapper is and draws hundreds of moths and other insects. During the day he'd climb into the potted plants on the deck and burrow down into the soil.
On July 19, 2013 the "deck" toad got stepped on thankfully I saw what was happening an pushed the "stepper" off of him, probably saved him from a horrible splattering the toad tried to hop off but seemed clumsy and kept falling over, so I set up a tank for him.
I do have 4 other toads of the same species I raised from tadpoles, so I know how to care for him.
It seems his injuries are limited to his right front leg. He's holding that leg up and when he does move he has his right back leg out farther than usually and both his left legs almost underneath him, most likely this helps him keep his balance so he doesn't need to put the right front leg down(see pic). Otherwise he's fine..he's eating and pooping normally.
I am concerned with his right front leg and after 5 days there seems to be no change....what can I do to help him? Is there anything I can give him to promote healing, other than the regular cricket dusting vitamins and calcium? Or anything for pain? Or can I put something around the leg like clinge wrap or splint? I know this sounds ridiculous and not feasable or practical, but I thought I'd ask anyway.
Thanks for any suggestions