Karlsson reveals he had half his ankle bone removed in surgery

As he inches closer to recovery, Erik Karlsson revealed a rather unbelievable aspect of his offseason foot surgery Wednesday.

The Ottawa Senators captain went under the knife in June to repair torn tendons in his foot, an injury he sustained during the playoffs.

Karlsson is skating with the Senators, but the timeline on a possible return is still unclear.

"We’ll see how the next few weeks go along and we know he’ll be back before Christmas, and we hope it’s in October," general manager Pierre Dorion told Sportsnet's "Tim & Sid" on Tuesday.

While the new details of his procedure are shocking to say the least, Karlsson is no stranger to superhuman recoveries. In 2013, he underwent surgery to repair a 70 percent tear in his Achilles, and returned to the ice two months ahead of schedule.