Center Joe Thornton was a full participant at the San Jose Sharks' first training camp practice Friday and said his surgically repaired left knee was 100 percent healthy.

"I feel good," Thornton said. "I rehabbed hard this summer. The knee feels great, to be honest with you. It feels real good."

Thornton, 38, tore the MCL and ACL in his left knee on April 2 in a regular-season game at the Vancouver Canucks. He missed the Sharks' final three regular-season games and their first two of the Stanley Cup Playoffs. Two weeks after being injured, he played Game 3 of the Western Conference First Round against the Edmonton Oilers. Thornton played the final four games of the series, which the Sharks lost in six games.

Thornton, San Jose's top-line center, had surgery April 24. He returned to the ice by early August, then, after a break, he "started ramping it up" two weeks ago.

"Jumbo is one of the most unique athletes, forget about hockey players, that I have ever seen," Sharks general manager Doug Wilson said. "Nobody loves the game more than Joe Thornton. The amount of work he's put in rehabwise and fitnesswise is such an inspiration to everybody in this organization. If we were starting [the season] tomorrow, he'd be ready to go."

Thornton spent most of his offseason strengthening his legs, particularly his quads.

"It was pretty much just to get my knee strong again," Thornton said. "But they feel real strong. I feel a lot of pop out there. They're probably as strong as they've ever been just because I had to rehab that knee so much."

Sharks center Logan Couture said he wasn't surprised to see Thornton fully healthy Friday, not after seeing him return during the playoffs with two torn knee ligaments.