LA JOLLA, California - A relaxed and happy Tiger Woods gave his body a thumbs-up on Wednesday and said he wanted to play a full schedule leading up to the Masters in April.

Speaking on the eve of the Farmers Insurance Open, his first official tournament in almost a year, the 14-time major champion said he has not "felt this good in years".

Woods acknowledged his apparently successful spinal fusion last April was a last-ditch attempt to end his crushing pain after he had exhausted every other treatment option.

"My quality of life is infinitely better than it was last year at this point," he said. "I have no more pain in my back.

"It feels good not to have a burning sensation going down my leg into my foot, or collapse when I'm walking, things of that nature."

He beamed his trademark smile multiple times as he spoke to the media for 23 minutes at Torrey Pines, a day before the opening round of a tournament he almost owns, with seven victories.

The former world No 1 had just played a pre-tournament pro-am at which he delighted a large gallery of fans by finishing eagle-birdie for a final score of 2-under 70.

Woods addressed in detail questions about his swing and spoke at length about the thought process that went into the back surgery he underwent after three failed microdiscectomies.

As usual, he said little about his personal life, other than to say his two children were well.

He did not address last year's arrest after he was found asleep at the wheel of his car with multiple prescription drugs in his system.

But when it came to his health in general and golf in particular, the 42-year-old could hardly contain his enthusiasm at being pain-free. "It's been so bad for so long, but turning it around and having my back fused, I haven't felt this good in years, so I'm excited about it," he said.

Woods has played one tournament since his surgery, the unofficial Hero World Challenge in the Bahamas in December, where he finished ninth in a field of 18 players in a good test run for 2018. He hopes to play a full schedule for the first time since 2013.

"I went through every single procedure that is non-surgical and it just didn't get better," he said of his back and the decision to have two vertebrae in his lower spine fused.

"The surgery and the fusion was the only step I had left. I was lucky," he said.

Of all Woods' victories, perhaps his greatest came here at the 2008 US Open.

He won despite having, in his own words, "no ACL" (anterior cruciate ligament) and a "broken leg" (two stress fractures in his lower left leg). But that was 10 years ago and he has not won a major championship since.

"My expectations have been tempered a little bit just because I haven't played," Woods said.

"I just want to start playing and getting into a rhythm of playing a schedule again.

"I haven't done that in such a long time, so I don't know what to expect.

"I'm going to grind it out, give it everything I possibly have."

Reuters