I don't disagree about the potential issue of back injury or any significant injury in a collision sport. Due diligence needs to be part of the process for any major acquisition that has had major or recurring issues or games lost to injury. I think some back channel informal conversation could also be held with Craig McTavish.
Parayko's injury was two seasons ago and since he's returned and been an absolute pillar in terms of durability and time on ice. An article also from last season:
With Colton Parayko's previous back injury, a game off is reason for concern
"The Blues won without Parayko on Wednesday, but in 2021, they went 7-10-4 in the 21 games he missed from Feb. 15 to April 5. He played the final 16 games of the regular season, and all four of the team’s postseason games, getting stronger each game.
Still, Parayko’s back continued to be a concern. The Blues said that he wouldn’t need surgery and that an offseason of rest would help. Any question that they didn’t believe that themselves was erased when he was signed to an eight-year, $52-million contract extension in September 2021. There was still one year left on his previous deal, which meant he would be in the fold through the 2029-30 season.
At the time of the agreement, Blues general manager Doug Armstrong said the organization had done its due diligence.
“NHL players get injured. That’s just the reality of a physical sport,” Armstrong said. “We talked to our (medical staff), and we were comfortable to take this risk. I think there’s a risk with any player you sign at this age. The NHL lifestyle, on ice, it’s a physical game, it’s a fast game, and it doesn’t look like it’s slowing down.
“But for us, I know how Colton takes care of himself. I know his nutritional beliefs, his workout beliefs. He’ll do whatever he can do to give himself the best opportunity, and that’s really all you can ask for and hope for, good luck.”
St. Louis management with full details about the injury signed this player with confidence he would return to health. Two years later Parayko's time on ice this year is 23:15 which is more than his career average of 22:08. He played 80 games last year, all of their 12 playoff games last year and 51 of 54 games this year. Outside of his injury season two seasons ago (143 regular season and playoff games), Parayko is a durable workhorse who plays top minutes against elite competition.
We heard a similar fear with Adam Larsson and his back injury. Yes, I know, who knows if they are similar issues or not but he is an example of someone who has come back from an apparent recurring back injury who plays a tough, physical style of game and has been both excellent and durable.
Parayko's pedigree, elite size, skating and two-way ability not to mention contract relative to Karlsson makes him well worth investigating fully if the oldest team in the league is looking to retool deeper.