Fergus McFadden recieves treatment at Thomond Park following the injury
Fergus McFadden is out of Ireland's tour of New Zealand and Australia after suffering a fractured jaw in Friday night's defeat by the Barbarians.
The Leinster centre will be sidelined for six to eight weeks.
Jerry Flannery (calf) and Shane Horgan (stomach) did not fly out with the squad on Saturday.
They are doubts for the tour opener against New Zealand next Saturday but Jonathan Sexton has been passed fit following a gum infection.
Leinster fly-half Sexton pulled out of the 29-23 defeat at Thomond Park on medical advice due to an infection in his gum close to the area where he recently had surgery on a fractured jaw.
Munster hooker Flannery sustained a calf injury in the game while Leinster wing/centre Horgan withdrew ahead of the match with a stomach complaint that required further investigation.
A decision on Flannery and Horgan will be made next week.
Uncapped Munster hooker Damian Varley has joined the squad as cover for Flannery.
Leicester's versatile back Johne Murphy has travelled with the tour party and he will remain with the squad irrespective of Horgan's availability.
McFadden joins a long list of players forced to the miss the tour through injury.
Keith Earls, Paul O'Connell, Rory Best, Kevin McLaughlin, Stephen Ferris, Luke Fitzgerald and Denis Leamy re also absentees.
Ireland will take on the All Blacks in New Plymouth before facing the New Zealand Maoris on 18 June and Australia in Brisbane on 26 June.