Ulster have confirmed that prop Marty Moore sustained a torn anterior cruciate ligament in his right knee in the recent United Rugby Championship defeat to Munster.
Moore was stretchered off after sustaining the knock just 30 minutes into the interpro clash in Belfast.
A subsequent MRI scan has revealed the extent of the damage, with Moore set to meet with a knee surgeon this week.
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It will rule the 31-year-old out of action for the remainder of the season, while Ulster have a number of other injury concerns ahead of Saturday's massive Champions Cup clash with La Rochelle at Stade Marcel Deflandre.
Rob Baloucoune (hamstring) and Sean Reffell (ankle) were both injured in last Saturday's URC defeat to Benetton in Treviso, while Matty Rea sustained a foot injury playing for Ulster ‘A’ away against Ealing Trailfinders last Friday.
"As a result of these injuries, all three players are currently unavailable for selection," said an update from the Ulster Rugby Medical Performance team.
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