A success story

Endoscopic fusion


Dr. Morgenstern was the first surgeon to develop and use in clinical routine a new, disruptive endoscopic  surgery for intervertebral body fusion. This surgery allows placing expandable cages with a skin incission of less than 15 mm. length, reduces a patient’s blood loss and is minimal invasive as no soft tissue and bone are removed during surgery. This endoscopic fusion surgery can be performed under local anesthesia, which is also unprecedent in spine surgery. This new, disruptive endoscopic fusion surgical technique intends to avoid big and invasive dissections to achieve lumbar interbody fusion as required in clssical spine surgery.

The disruptive procedure was developed by Dr. Morgenstern after decades of acquiring knowledge and experience with endoscopic surgery. His strong will to advance current surgical procedures to improve patients’ quality of life led him to develop and patent an endoscopic fusion technology that was first acquired in 2008 by the American company Interventional Spine Inc., based in California, U.S.A.

This sparked a fast  chain of successful milestones. First, in 2011 the CE mark was obtained for the use of endoscopic fusion procedures in Europe. Dr. Morgenstern was the first surgeon worldwide to clinically use this procedure, by successfully implanting an expandable cage in a patient who was in strong pain due to a degenerated disk. More cases followed with an excellent outcome for endoscopic fusion surgery.  In 2014 the technology was cleared by the Food and Drug Administration (FDA) for its clinical use in the U.S.A.

Due to its reliability, accuracy and excellent outcome, the commercial introduction of this endoscopic fusion technology in the U.S.A. also was a great success. In consequence, Depuy-Synthes, a company of Johnson and Johnson, the biggest medical device company in the world, acquired this technology in January 2017.

Dr. Morgenstern has established himself as a clinical pioneer and a worldwide reference in minimally invasive, percutaneous and endoscopic spine surgery. He has produced numerous scientific international papers, patents and obtained an overwhelming amount of invitations to present his surgical technique in international conferences and teach in international workshops.


Example I Clinical Case


Indications for percutaneous endoscopic surgery

In cases of collapsed intervertebral disks and degenerative disc disease (DDD), now it is posible to restore the disk’s height with an expandable cage which is endoscopically introduced into the collapsed disk with a skin incission of less than 15 mm. of diameter. This surgical procedure can be performed under local anaesthesia. The patient resumes walking a few hours after surgerry and is usually discharged from the hospital approximately 24 hours after the surgery.

It is indicated for chronical lumbal pain and collapsed discs with sciatica. The pain usually is relieved in less than 24 hours after surgery.

Postoperative CT scan images showing an extremly collapsed L5/S1 disc (left) and the same disk’s restored height after insertion and expansion of an expandable cage (right)

Pain relief is immediate or in less than 24 hours after the endoscopic fusion surgery. Walking is usually resumed 6 hours and hospital discharge in less than 24 hours after surgery.


Explanatory video of an endoscopic fusion surgery

Endoscopic fusion surgery


Example II Clinical Case

Concorde Lift Technology

Developed by Dr. Morgenstern

Press Releases

2018 – Concorde Lift Launch2017 – Depuy-Synthes acquires expandable cage2011 – Interventional Spine Inc. FDA approval2008 – Interventional Spine Inc. Launch

Images of an endoscopic fusion surgery


Endoscopic approach for the placement of an expandable cage through a skin incision of just 10-12 mm of length.

A cage that can be expanded to up to 14 mm height restores the height of a degenerated, collapsed intervertebral disc.


Fluoroscopic image of the placement and expansion of an expandable cage in a collapsed intervertebral disc. From left to right note the progressive expansion of the cage and the restoration of the intervertebral disc’s height.

Endoscopic fusion, Dr. Morgenstern
Post-operative radiologic control of the inserted expandable cage.



© Copyright – Morgenstern Institute of Spine, 2019.