The French, robbed of the services of Serge Betsen for the autumn internationals, now look set to loose their best loose-forward for the remainder of the Six Nations.
Yannick Nyanga will know on Tuesday how long he will be out of the game after hurting his knee in the 43-31 win against Ireland. Nyanga joins another French star, midfielder Yannick Jauzion, on the sidelines.
Jauzion, the glue among the French backs, is out for 40 days after breaking his little toe in his right foot shortly before the Six Nations defeat to Scotland.
France must win their remaining Six Nations matches to win the title.