With Arod injured, will the NYY look for another third-baseman to replace him? Who could it be?

Well if he is out for a really extended period, they will go after Scott Rolen of Toronto, he is an upgrade defensively and has a pretty decent swing with 25-30 HR potential especially in a stacked Yankees line up. But most likely they'll make due until he is healthy and fill in with Cody Ransom. I have heard Brad Inge, Detroit and Chone Figgins, LA Angels mentioned on a short list of long term replacements, but Rolen would have to be the front runner if they could pull the deal off.

some say he'll play through it. Robinson Cano actually has played third and the yankees might use him but for the free agents: Ray Durham or Mark Grudzielanek

Brandon Inge of Detroit has been mentioned

i think they will put there utilty player in for arod until he is better..there is no rumors of them getting a new 3rd basemen

after they wait and see, they may trade for melvin Mora from Baltimore or Crosby from Oakland and move him to 3rd