Booth is expected to miss 4-6 weeks with an MCL sprain in his right knee.
After the hit, Booth remained on the ice throughout a television timeout and did not put any weight on his right leg as Kevin Bieksa and Henrik Sedin helped him off the ice. Booth then hopped to the locker room on his left leg.
Porter was given a five-minute major penalty for kneeing and a game misconduct.
Pierre LeBrun covers the NHL for ESPN.com.