Northern California Spine Surgeon Dr. Kornelis Poelstra Leads Spinal Breakthrough with Implantation of First Molybdenum Rhenium Fusion on West Coast

Proprietary Superalloy MoRe® (Molybdenum-Rhenium) First Novel Alloy FDA Cleared in Decades.

Preeminent Northern California Spine Surgeon Dr. Kornelis Poelstra, of The Robotic Spine Institute of Silicon Valley, has this week announced the latest medical breakthrough for the spine world, with the first-ever procedure on the West Coast using a Molybdenum-Rhenium rod in a patient.

The newly FDA cleared MiRus Europa™ Pedicle Screw System is the smallest pedicle screw system in the world for lumbar fusion, and incorporates MoRe®, a new class of implant material. A proprietary superalloy, MoRe® (Molybdenum-Rhenium) is the first novel alloy to be FDA cleared in decades.

This patented superalloy has greater strength and scratch and fatigue resistance compared to titanium, cobalt and iron alloys. MoRe® also has a superior biocompatibility profile with better hydrophilicity and osteoconductivity along with decreased ion release and biofilm formation compared to traditional alloys.

Due to its much greater strength and fatigue resistance, MoRe® implants are significantly smaller and allow patients to have smaller incisions and less soft tissue disruption.

Always focused on the next generation of spine care, the world renowned Orthopedic and Neurological Spine Surgeon used his co-developed Mazor navigated robotic platform during the posterior fusion procedure, allowing him to pre-plan his implantation of this new device in the patient.

As one of the main developers of the Mazor, offered by Medtronic, use of this platform often leads to increased efficiency, advanced precision, and rapidly reduces time spent under anesthesia in the operating room.

With a PhD in Biomedical Engineering from the University of Groningen in The Netherlands, Dr. Poelstra is on the frontline of the design and development of spinal robotics that assist in spinal fusions. Formerly based in Destin, Florida, Dr. Poelstra has performed nearly 1,000 complex robotic cases, more than any other spine surgeon in the world.


The Robotic Spine Institute of Silicon Valley, based in Los Gatos, California, is led by Dr. Poelstra, and has developed an outstanding reputation for delivering superior care to patients and for being at the forefront of pioneering many advancements in the spinal care field. The Institute prides itself on its team of the best spine surgeons and innovators in the world, and its strategic partnerships with the medical industry’s leading specialists and professionals.

MiRus is a medical device company that has developed and is commercializing proprietary novel biomaterials, implants and software solutions for spine, orthopaedics and cardiovascular disease. We are addressing the demands of today’s healthcare environment with an integrated platform of pre-operative planning and risk assessment tools, a breakthrough navigation and robotics system and post-operative monitoring and risk mitigation. Find more information about MiRus at

For more information on Dr. Poelstra and his The Robotic Spine Institute of Silicon Valley, visit

Dr. Kornelis Poelstra