Well, first of all, I wish you a fast recovery and hope you're doing okay. Injuries like that straight out suck.
As for recommendations, going through the Wii games you have, you own quite a few that, if memory serves, can play with one hand.
Dewy's Adventure
The House of the Dead 2 & 3 Return
The House of the Dead: Overkill
New Play Control! Pikmin
Sin & Punishment: Star Successor
I guess Wii Sports can also be an option, as is Pokémon Battle Revolution.