Oita - France coach Jacques Brunel said on Sunday it was his decision to send fullback Thomas Ramos home from Japan due to injury earlier this month even though he was fit enough to play for his club Toulouse this weekend.
"It is on me, I had the role of making the decision about whether to change the player or not," said Brunel during France's preparations for their quarter-final against Wales next Sunday.
"I take responsibility for making this decision because I thought it was the best decision for the French team."
Ramos picked up an ankle injury during France's 33-9 win over the United States on October 2 and was subsequently ruled out of the remainder of the World Cup, with La Rochelle full-back Vincent Rattez flown out as a replacement.
However, Ramos played the full 80 minutes seemingly with no ill-effects on Saturday as Toulouse swept to a 36-15 win over Castres.
"There was a diagnosis that he would be unavailable for around 10 days," added Brunel.
"We had two matches to play against Tonga and England and we didn't know the result of the England match against Argentina. We needed two full-backs who were 100 percent fit.
"It is no laughing matter to send home Thomas Ramos because he is our full-back and one of our kickers, one of the two or three best in France.
"It was my decision. I don't know if others would have acted differently but it is on me."
France have also lost Wesley Fofana, Demba Bamba and Peato Mauvaka to injury.