The Predators unveiled the specific nature of center Ryan Johansen's left thigh injury on Sunday, confirming that he required season-ending surgery to treat acute compartment syndrome.

"His symptoms developed shortly after the end of (Game 4 of the Western Conference finals) in Nashville (on Thursday), and as they progressed, he was diagnosed, transported to Vanderbilt University Medical Center and had surgery performed by head team physician Dr. Jed Kuhn within two hours of his diagnosis," Predators general manager David Poile said in a statement.

Johansen "had no permanent injury to his muscle, nerves or blood vessels," the statement said. A full recovery is expected. The team previously offered a timetable of two to three months.

Acute compartment syndrome occurs when pressure within the muscles builds to dangerous levels. It can restrict blood flow, which can prevent oxygen from reaching nerve and muscle cells.

Johansen completed Thursday's game, a 3-2 overtime loss to the Anaheim Ducks. The Predators' 3-1 victory in Game 5 on Saturday was the first time the team has played without Johansen since acquiring him in a January 2016 trade from the Columbus Blue Jackets.

Reach Adam Vingan at avingan@tennessean.com and on Twitter @AdamVingan.