NSW centre Josh Morris has revealed he’ll play out the rest of his NRL career without posterior cruciate ligaments in either knee.

Josh Morris says no longer having posterior cruciate ligaments (PCL) in either knee won’t prevent him from remaining one of rugby league’s premier centres.

The Test and NSW star is back for State of Origin three in Brisbane on Wednesday after making an unexpectedly fast recovery.

Morris ruptured the PCL in his left knee in game one in Brisbane some three years after suffering the same injury to his right one.

He looked set for up to four months on the sidelines but after six weeks of extensive rehabilitation using state-of-the-art equipment the 27-year-old is back to face Queensland at Suncorp Stadium.

“I ruptured (my PCL) in my right knee in 2011 and I think being a bit older and wiser and knowing what I had to do helped me get back,” Morris told AAP.

“There was a lot of time spent attached to an ice machine at home.”

A PCL tear is not as serious as one to the anterior cruciate ligament (ACL) which requires a nine-month recovery process but Morris said he’ll need to follow a strengthening program for the rest of his career to compensate for the redundant ligaments.

“Your PCL is more for your take off and acceleration and you just have to work on your hamstrings and your quads to compensate for it not being there,” he said.

“You don’t need surgery, but when you lose your PCL it doesn’t come back.

“I don’t have one in either knee now so it’s just a case of doing my rehab and working on strengthening the muscles around the area.”

Although he hasn’t played since Origin one, Morris has no concerns about being rusty going into the game and he’s confident he’ll suffer no long-term effects from the injury.

“The medical staff at the Bulldogs are first class and Des Hasler is very big on rehab and new ideas,” he said.

“Science has moved on so much even from when I did it to the other knee and I’ve no doubt I can keep up the form that have shown over the last couple of seasons if I’m diligent with what I do in the gym.

“I am only 27 and I think I have a good few years left in me.”