Montreal Canadiens defenseman Jeff Petry will miss the rest of the regular season following surgery for a sports hernia, while Tom Gilbert will require six months to recover from knee surgery.

Gilbert had knee surgery performed by Dr. James Andrews in Florida on Wednesday, while Petry hasn't undergone his procedure yet.

The Canadiens ruled Gilbert out for the season on Monday, but the new timetable puts training camp in jeopardy for the pending unrestricted free agent.

Petry, who hasn't played since Feb. 7, posted an even-strength Corsi For percentage of 54.6 and 16 points in 51 games.

Gilbert managed only two points and a 5-on-5 Corsi For percentage of 49 in 45 contests.

Copyright © 2016 Score Media Ventures Inc. All rights reserved. Certain content reproduced under license.