Schefter reports that Bortles dealt with the condition since December of 2016, but the Jaguars opted not to have him undergo surgery last offseason.
Despite the injury, Bortles quarterbacked Jacksonville to its AFC championship in 18 years.
Bortles passed for 3,687 yards and 21 touchdowns during the regular season before winning the first two playoff games of his career.
This season was a big step as the Jaguars had won a total of 11 games in Bortles’ first three seasons with the franchise, one less than what the Jaguars won this season (10 regular season, two playoffs).
The Jaguars had picked up the fifth-year option of Bortles’ rookie contract during the offseason, one that will bring him a $19 million payout for 2018.