About IITS

The IITS (formerly IITTSS) is a 501C3 non-profit organization whose focus is on intradiscal therapy aided by the endoscope as the least invasive, visually-guided treatment for discogenic pain.

The International Intradiscal Therapy Society (IITS), formerly the International Intradiscal and Transforaminal Therapy Society (IITTSS), was founded in 1987 and is now headquartered in Phoenix, Arizona.


Anthony Yeung, MD
Executive Director
James Yue, MD
Girish Datar, MD and Luke Kim, MD
Co-directors of Medical Education


These one–of–a-kind workshops featured practical information on MIS techniques utilized by endoscopic spine surgeon, Dr. Anthony Yeung and the surgeons at Desert Institute for Spine Care (DISC).

They included educational lectures, live operations performed by Dr. Yeung, and a cadaver workshop for surgeons to learn his techniques.

From the desk of Anthony Yeung, MD
Executive Director of IITS

Trends from 1997-2018 for Article Publication

I have witnessed the exponential acceleration of interest in endoscopic spine surgery in the past two years, from 2017-2018, especially in Asia. Tremendous interest and growth now comes from China, where Chinese President Xi’s directed economic reform has produced visible changes not only in reports on their military presence, but in Health Care Reform. I have also personally experienced and witnessed the changes and directives in spine care.

Chinese minimally invasive surgical organizations, Chinese medical associations and now even traditional medicine have embraced endoscopic surgery for their members. My concern is if the interest can be accompanied by appropriate training. I have been lecturing on endoscopic spine surgery along with emerging Chinese key opinion leaders of these organizations. Many have come to me for training since 2000. It is truly remarkable to see the progress in minimally invasive surgery in the past few years, and even North America is taking notice.


I report on my activities this year, along with pictures that chronicle interesting geographic, tourist, and historic sites in Asia. I encourage those interested to visit iits.org for updated material.

To read the Full Report, please visit iits.org.

From the desk of Anthony Yeung, MD
Executive Director of IETSS

New sub-societies are being established in China and Taiwan, as I step up training all over the world. One such society is the “Yeung Fellow’s Endoscopic Spine Society,” in China made up of my spine fellows and other physicians who are embracing the YESS endoscopic technique. A parallel “Academic Yeung” is also being formed for the Taiwanese Spine Surgeons currently being trained by me.

Below you will find excerpts from a personal message from the President of the “Yeung Fellow’s Endoscopic Spine Society,” Xifeng Zhang, M.D, PhD. about his encounters as both student, teacher and practitioner of MISS endoscopic techniques, as well as the values, beliefs, and establishment of the “Yeung Fellow’s Endoscopic Spine Society.” I encourage you to download and read the full statement.

Anthony Yeung, MD

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From the desk of Anthony Yeung, MD
Executive Director of IETSS (formerly IITS and IITTSS )

Spinal Therapies announced its dissolution after the company determined that it is unlikely to ever regain profitability since the early days when chymopapain was promoted by the likes of Eugene Nordby, who is still alive and thriving as the first Executive Director of IITS.

I took over IITS at the request of Dr. Nordby and maintained an emphasis on the Organization’s focus on Intradiscal therapy aided by the endoscope as the least invasive, visually-guided treatment for discogenic pain.

Intradiscal therapy is still the only Level I validated EBM. Unfortunately, events adversely affecting Pharma and Surgical company profitability have caused both entities to turn toward the more profitable implant and hardware devices to follow the money and the road to profits.

We have, however, a core of highly trained and dedicated surgeons who recognize the future of spine care who are are lifetime members of IITTS, and each proudly wears the wears the Gold IITS pin on their lapels at spine meetings, still promoting Intradiscal therapy through an endoscope.

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Copyright © 1996-2018 by Anthony T. Yeung, M.D., P.C.
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