Cast vs. Surgery. Treatment will largerly depend on the location of the fracture and its complexity. Certain wrist bones must be surgically united, whereas other may be easily casted. Your orthopedic specialist should be able to explain what the best next step is.
Depends. Nondisplaced fractures need to be immobilized with a cast or brace. Dusplaced fractures need surgery and may take 2-3 months before you get lift or use the hand a gain to any significant degree.