Answer: Without seeing the damage, I can only offer general advice. Try using a splint (a couple of thin pieces of wood like you get at a hardware store for stirring paint). Have a friend hold the splints on either side of the damaged stalk and then gently but firmly wrap it with a stretchy material - old pantyhose would be perfect. With any luck at all the stem will callous over and in time you'll be able to remove the splint.
Hope this works!
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