The 25-year old Scotland international is set to be sidelined for about nine months after injuring his cruciate ligament in his right knee on October 29 but after experiencing this before, he is confident he can return as strong as ever.
"I've come back from this once to do that and I can do it again,” he told SunSport in reference to the same injury on his left knee he sustained in 2008.
"I was on the upward climb and playing most weeks for Rangers and Scotland but I've got to turn that into my drive forward.
"I DID play two full seasons in the Champions League, I DID play most times for Scotland and I DID start scoring goals again.
"Is it worse doing it when I was playing at that level? I'd say it's comforting to know I got to that level from the injury. I can do that again."