South African-born Strauss will be out for up to 10 weeks because of the injury, which he picked up during Leinster's Heineken Cup victory at Exeter on Saturday.
Munster team-mates James Coughlan, Damien Varley, Ian Keatley, Mike Sherry and Tommy O'Donnell have all, been called up, along with Leinster duo Rhys Ruddock and Kevin McLaughlin.
Ireland head coach Declan Kidney has called up an additional seven players to the training squad in Carton House this week as they prepare for the opening game of the Six Nations and the reland Wolfhounds clash aganst the England Saxons on Friday.
The Wolfhounds squad will be announced on Tuesday with the team confirmed later in the week.
Ulster's Roger Wilson was considered but has been ruled out with a hamstring injury.
Gilbert has released a new line of rugby cleats. The Gilbert Virtuo 8S is part of the exciting new product. Check it out.
The entire All Blacks apparel line has been updated for 2013/14. Check out the New Zealand All Blacks polo.
The Nike Tiempo is a solid rugby cleat and one of few styles still made from full-grain natural leather.
The Gilbert Blitz 8S rugby cleat is a great cleat at a great price of $69.99. Get a new pair of cleats today.
A cool looking all black rugby cleat with the high performance adidas is known for. Get in the Gear!
Wear the crest of the British and Irish Lions on your t-shirt. A great look for the summer.
The All Blacks Performance t-shirt is black with hints of blue from the training jersey. Very Cool.
The New Zealand All Blacks training jersey for 2013/14. Get in the Gear!
The USA Rugby Pro Alternate rugby jersey is perfect for any fan of the Eagles. Get yours to wear during the summer Test matches.
The NEW All Blacks 2013/14 jersey has arrived at World Rugby Shop. Dare to wear the colors of the All Blacks.