Paul O'Connoll should be back for the game against Scotland

The Munster player was expected to be available after injury but a scan has revealed that his shoulder has not healed to the extent anticipated.

O'Connell should be fit for the game against Scotland in Dublin on 11 March.

Meanwhile, Saracens hooker Shane Byrne has been added to the squad as cover after Jerry Flannery sustained an ankle injury in training on Tuesday.

A decision on Flannery will be made later in the week.

O'Connell sustained a strained AC-joint in the 43-31 defeat to France and suffered a setback in training on Tuesday.

Byrne is one of 11 players who have been added to the squad that was on duty in Paris.

Forwards Marcus Horan, Mick O'Driscoll, Jamie Heaslip, Neil Best, Matt McCullough and Bryan Young are joined by Denis Hickie, Girvan Dempsey, Robert Kearney and Barry Murphy.

Ulster and Ireland A prop Young is called up because of an injury doubt over Reggie Corrigan, who suffered a neck strain playing for Leinster.

Munster pair Anthony Foley (ankle) and John Kelly (groin) have been ruled out of the game. Foley was injured during the Celtic League defeat by Glasgow on Saturday.