"Instead of Open Surgery" - can be very misleading language used in promotional material from other centers, when in fact some of them do a very traumatic access sizeable opening, stretching and tearing muscle, drilling and cutting out bone, ligament and commonly joint also.
The bone, ligament and joint removed is typically completely normal and doing an important job in the spine. Removing it causes permanent injury and may cause permanent symptoms due to this trauma (Failed Back Surgery Syndrome). After doing this type of damage, to call it "instead of open surgery" is absurd. This deception is beyond HYPE.