Dr. Johnson was recently a guest of Professor Alan Crockard and Professor Adrian Casey of the National College of Neurology and Neurosurgery at Queen’s Square in London, England.

Dr. Johnson had studied under Professor Crockard, who was Chief of Neurosurgery in the 1990s in London at Queen’s Square and also studied at the National Pediatric Hospital at Great Ormond Street in London.

Dr. Adrian Casey is now the Chief of Spinal Neurosurgery at Queen’s Square and a longtime professional colleague of Dr. Johnson, having been on teaching and research programs focused on artificial disc technology and caring for patients around the globe.