I'd say yeah, sure, but its more of a matter of whether it could actually work...
If a limb has been out of action for a long time, the muscle atrophy would substanitally impare the benefit of that limb, and the resulting rehab would probably span for a very very long time
What about the significant immunological concerns? If surgery took place, and then the limb was rejected, that would be devasting to both parties; and then the amount of immunosuppressants needed would surely reduce the quality of life, even if the limb did "take" to the body.
You'd have to weigh out pros and cons there.
Also, wouldn't there be issues with bone marrow (depending on the age of the donor) as after all, it is an entire limb?
if the bones keep producing blood cells the immune response would be through the roof as the foreign cells would attempt to proliferate throughout the body, and the self response would destroy the cells. This then releases major toxins into the body, resulting in kidney and liver damage.
IF it could work, what if there was a limb donation service, working the same way as organ donation when you died?
Maybe not even a whole limb, maybe even just fingers and thumbs or something similar?