Leinster second-row Quinn Roux has been ruled out of action for four to five months after dislocating his shoulder.
The South African suffered the injury towards the end of the first half of Leinster’s 6-0 win over Glasgow on Friday night.
The 22-year-old has made just three appearances for the province since signing from the Stormers in July.
Meanwhile, Munster’s Niall Ronan was released from hospital this morning after scan showed the player did not suffer any significant damage after an incident in the province’s defeat to Scarlets on Sunday.
It is not know yet when he will return to action.