like cm said pec deck, cable flys and dumbbell flys

Youl probably find it hard to squat too, especially if ur in a cast and can't even balance your hand on a barbell

When I broke my first I learnt to do cross arm front squats, works great

ask a guy to spot you on the bad hand while u bench press with the other, might take a while to synchronize the lift but u will get there

Rip upper body
Welcome lower body !

Dumb Bell press with your good arm.

Your other side will catch up fast once it heals. I took physical therapy in college and it has something to do with your brain and confusion.

Good luck!

jajaja