COLLINGWOOD has suffered the first injury of its training camp to America with a club doctor breaking his leg.

The Magpies were hiking through the Grand Canyon last week when Dr Greg Shuttleworth fell and broke his leg.

Five players carried Shuttleworth on a stretcher to the base of the Canyon where he was taken by helicopter to hospital.

Speaking to collingwoodfc.com.au, Shuttleworth said it happened relatively innocuously.

"I was walking down the Canyon and was 200 metres from the bottom and looking forward to lunch. Jarryd Blair came up behind me and I moved over to let him through and subsequently fell," he said.

"I stood up but there was nothing holding it up and it wobbled and I went down again."

The Magpies doctor was able to aid park rangers in diagnosing his injury and they fitted him with a splint made out of surrounding timber.

"I disrupted the ligaments between the tibula and fibula bone in my ankle and as a consequence it broke the fibula bone just below the knee."

He was required to remain in Flagstaff for several days for the swelling to subside until he was allowed to return to Melbourne. He is expected to be back walking in four weeks.

The Magpies will fly home on Saturday.