Gunter, currently on loan at Nottingham Forest, sympathised with his Spurs colleague, and said: "If he didn't have a problem he would be one of the best in the world.
"People say that he does not train during the week, and that is right. He comes in on a Friday and turns in great performances every Saturday.
"For him to get through extra time in the Carling Cup final says it all about his courage and ability.
"You don't see too much of him. He works with the physios a lot. He knows the condition of his knee, but he still manages to put in great performances.
"He has great respect from the other players at Spurs. If he is fit, he plays. There cannot be many who cannot train all week and then get through 90 minutes at the top level week after week, it is remarkable."