The 28-year-old, who with his Ospreys team-mates for a Pro14 match against the Cheetahs, was bitten by the animal as he stroked it through the bars at the Weltevrede Game Lodge.
He underwent several small operations in South Africa before returning to Wales but the wound became infected.
The Bridgend-born ace is close to a playing return but confessed that the outcome could have been much worse.
"The infection was the major issue," he told the BBC. "The next day it started tracking up my arm. The surgeon said there was a chance I could lose my hand.
"The bite went straight through the other side of the hand, but I was really lucky it didn't hit any tendons or ligaments.
"The surgeon said it was like winning the lottery, he said it was the best possible outcome considering I had been bitten by a lion."