ST. PAUL, Minn. -- The Dallas Stars activated Stephen Johns before their game Saturday night in Minnesota, clearing the way for the defenseman's first game in almost 22 months.

Forward Radek Faksa was placed on injured reserve to make room for Johns on the active roster.

Johns has been out since late in the 2017-18 season because of post-traumatic headaches. The Stars have said the condition isn't related to concussions.

Johns, 27, hasn't played since March 29, 2018, at Minnesota. It was the last of a career-high 75 games in his third NHL season. Johns missed the final five games that year before sitting out all of last season as headaches persisted.

He played two games on a conditioning assignment with the Texas Stars of the AHL before rejoining Dallas on Thursday.

The return of Johns could coincide with the Stars' first game without defenseman Miro Heiskanen. The 20-year-old standout left Thursday's loss to Buffalo with an upper-body injury.

Johns made his debut for Dallas late in the 2015-16 season and played in all 13 of the team's playoff games as a rookie. He has 13 goals, 15 assists and 306 blocked shots in 150 career regular-season games.