"Anyone who says I was not willing to play to play until I was 100 per cent fit is not telling the truth," he said in the Sunday Mirror .
"I have never refused to play for the team, yet I was hearing claims about me not being psychologically committed.
"The people who criticise me don't know that three years ago I was playing games despite having a knee that I couldn't bend more than 90 degrees."
Saha admits he did not take much satisfaction from his own contribution to United's success last season, and is determined to play a bigger role this term.
He revealed: "I have to confess that when I collected my medal I was really sad.
"Obviously everyone takes some of the credit for winning the title, but I didn't feel I had played a big enough part in our success.
"I was reduced to a few games and, while we all celebrated, I still had this empty feeling inside.
"That's why my aim this year is to stay fit and show people the real Louis Saha."
