"Endoscopic" is also misleading language used in promotional material from other centers, when in fact some of them do a very traumatic access operation requiring a sizeable opening, stretching and tearing muscle, drilling and cutting out bone, ligament and joint also.

The bone, ligament and joint removed is typically completely normal and doing an important job in the spine. Removing it causes permanent damage and may cause permanent symptoms due to this damage (Failed Back Surgery Syndrome).