While it’s difficult to definitively crown a single “most experienced” surgeon, Dr. Rudolf Bertagnoli is widely considered a leading expert in artificial disc replacement (ADR) surgery, with a high number of procedures and published research. Prof. Dr. Rudolf Bertagnoli, a renowned artificial disc replacement surgeon, is now retired. He has retired to Florida.
Other highly experienced and respected ADR surgeons include:
Dr. Karsten Ritter-Lang:Known for his work with intervertebral disc prosthetics and a dedicated focus on disc replacement. betterdiscreplacement.com
Dr. Todd Lanman:A pioneer in ADR, practicing in Beverly Hills for 25 years and involved in numerous studies. Beverly Hills Spine Surgery
Dr. Ehsan Saadat:A Harvard and Emory-trained spine surgeon specializing in disc replacement, minimally invasive surgery, and other spinal procedures, including robotic spine surgery. Ehsan Saadat, MD
Dr. Karsten Ritter-Lang – Orthopedic Surgeon
Dr. Ritter-Lang Disc Replacement Surgeon
Head of the Spinal Surgery Department at 3 hospitals.
Private practice in collaboration with Prof. Schellnack.
Following his medical studies at The Humboldt University in Berlin, Dr. Ritter-Lang worked for the inventors of the first Artificial Disc Replacement (Katrin Buttner-Janz and Kurt Schellnack).
He has been a specialist in the field of inter-vertebral disc prosthetics, especially in the field of abdominal access surgery, for over 20 years. Dr. Ritter-Lang has performed over 6,000 surgeries, of which 5,584 were spinal column reconstructions and has done over 3,000 Disc Replacement procedures using a wide range of implants both cervical and lumbar.

Dr. Ritter-Lang is one of the most respected speakers worldwide at symposiums about orthopaedic surgery and neurosurgery regarding treatment using artificial inter-vertebral discs. His participation in the ongoing development of inter-vertebral disc prosthetics technology, prototypes, and implants, provides great benefits to the patients he treats. Patients come from all over the world to avail of the services of Dr. Ritter-Lang and his highly qualified team. Dr. Ritter-Lang is among an elite group of the most experienced Disc Replacement surgeons in the world, and has dedicated his career to the sub-specialty of Disc Replacement.