He said: "It was in June when I had the operation and I knew there was a lot of work to do to get back.
"I am now just thinking about trying to get as many minutes under my belt as I can before trying to get back into the First Team squad.
"It was nice just to come through 45, my first in six months or so, and it feels good."
The news will be a welcome boost to Spurs boss Juande Ramos whose side have leaked 28 goals in 15 league games, and King admitted he was feeling the nerves in his first outing of the season.
"Every time I go on the pitch they are there," he added. "It is the pressure I put on myself to perform.
"I feel fine, it was good to come through. As long as the knee is fine I am happy.
"Injuries are all as frustrating each other, but this has been the one I've had to be most careful with and I made sure I was right before coming back so that I don't have any more problems. I feel I have done that and hopefully I will get the rewards from it."
King was replaced at half time with the game goalless, but Ismael Ehui scored the only goal of the game for Fulham in the 90th minute.