If the stems aren't completely broken you MIGHT be able to splint them (just like you would a broken bone). I did this on one of my plants (I fucked up and dropped my 600 watt HPS light on the poor plant and broke several stems -- I splinted them and they have all done fine. This was 5 weeks ago!) and it worked fine. As to the no liquid coming out issue, I wouldn't be concerned if the rest of the plant seems adequately hydrated. If the stems start looking bad, then just go ahead and remove the damaged stem/bud and keep going from there.