The Dolphins

might look to free agents after QB Ryan Tannehill hurts his knee.

DAVIE — The Miami Dolphins may have avoided a major scare, as an MRI revealed starting quarterback Ryan Tannehill didn’t suffer ligament damage to his left knee when he went down during Thursday’s practice, according to a league source. But there is still uncertainty about the stability of the knee, Tannehill’s timetable to return and what course of action the team will take as far as treatment.

Tannehill hyperextended the knee during the team’s first 11-on-11 session Thursday, when he scrambled to the right and fell — without contact — after the knee appeared to buckle.

The injury sent fans and members of the Dolphins franchise into a panic. It’s the same knee in which Tannehill sprained two ligaments in December, ending his 2016 season.

The 29-year-old Tannehill walked off the field on his own power Thursday. A video, shot hours after the injury, showed him walking back into the Dolphins’ facility without a noticeable limp following his MRI. In that video he was accompanied by head coach Adam Gase.

Neither Tannehill nor Gase spoke to reporters after Thursday’s practice.

“We’re just praying for him,” Dolphins tight end MarQueis Gray said following the workout. “Anytime you see your quarterback go down, you think the worst.”

While the initial diagnosis is encouraging, the Dolphins and Tannehill aren’t out of the woods yet, as concern has now been raised about the stability of the quarterback’s knee. He opted to not have surgery on it this offseason despite suffer-