Hogan filed the suit in Pinellas-Pasco Circuit Court, claiming he turned to the LSI in 2009 when he seeking treatment for multiple lumbar spinal abnormalities including scoliosis and multiple bulging discs.
In his suit, Hogan claims he fell for a sales pitch which masqueraded as "medical advice" and allowed the LSI to perform multiple surgeries on his back.
Hogan claims the procedures actually made him feel worse in the long run -- and blames the institute for not advising him that the laser treatment is only a temporary solution, not a permanent one.
Hogan claims he eventually had to undergo major back surgery with a different set of doctors -- and they actually fixed his back.
Now, Hogan says he wants LSI to pay for screwing him up -- and for causing him to miss out on employment opportunities in the entertainment world that would have netted him tens of millions of dollars.
And to add insult to injury, Hulk says LSI used his name and image to promote their business without his permission.
He's suing for more than $50 mil in damages. So far, no comment from LSI.
The LSI released a statement saying they "acknowledge" the filing of the lawsuit ... but add, "To protect patient privacy as well as the legal process, we do not discuss the details of litigation matters."