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Smith+Nephew announces first revision knee replacement cases with CORI◊ Surgical System


Smith+Nephew announces the first cases for revision knee replacement utilizing its CORI Surgical System. Dr. Thorsten Seyler of Duke University performed the first cases on August 17, 2022, combining Smith+Nephew’s handheld robotics technology with its LEGION Revision Knee System. Smith+Nephew is the first orthopaedics company to receive FDA 510(k) clearance for a revision indication using a robotics-assisted platform.

RI.KNEE ROBOTICS utilizes image-free smart mapping, eliminating the need for pre-operative CT/MRI scans and the potential for image distortion due to in situ components from the primary procedure. Instead, surgeons are able to build patient-specific 3D models of the joint, register anatomy and bony defects after implant extraction, intra-operatively gap balance in real-time, and accurately precision mill for final placement of components.1-4

“The ability to visualize and create symmetric and balanced flexion and extension gaps with the CORI handheld robotic system has made one of the most challenging tasks in revision TKA an easier undertaking. I have never used more posterior stabilized over constrained bearings in a revision scenario. Additionally, the image-free system also allows for accurate mapping of bone defects after implant removal and enables surgeons to use a bone preserving approach to revision TKA,” said Dr. Seyler.

Revision knee surgery using robotics expands opportunity for health care professionals

Surgeons can now experience the power and versatility of one robotics platform when using the CORI Surgical System. With broader capabilities and expanded indications, it can address robotic-assisted total, partial, and now revision knee arthroplasty, along with computer-guided total hip arthroplasty. By coupling robotics with Smith+Nephew’s clinically-proven LEGION RK System with OXINIUM◊ Technology5*, surgeons can experience a truly comprehensive implant and technology portfolio.

“Being first to market with a revision indication for robotic-assisted knee replacement surgery is a significant milestone in orthopaedics,” said Randy Kilburn, Executive Vice President & General Manager, Orthopaedic Reconstruction, Robotics and Digital for Smith+Nephew. “Our ability to offer a robotic-assisted solution for partial, total, and now revision knee arthroplasty using a single platform is a true differentiator, especially when it potentially simplifies a complex procedure and maximizes the system’s capabilities for surgeons to restore patient lives and live Life Unlimited.”

Over the last six months, Smith+Nephew has launched RI.HIP NAVIGATION, RI.HIP MODELER, “Cementless” CONCELOC Advanced Porous Titanium 3D printing technology with LEGION CONCELOC Cementless Total Knee System, and now a revision knee indication. All are supported by the CORI Surgical System.

To learn more about the latest advancements in orthopaedic reconstruction and robotics, please click here.


  1. Bollars P, Boeckxstaens A, Mievis J, Janssen D. The Learning Curve and Alignment Assessment of an Image-Free Handheld Robot in TKA: The First Patient Series in Europe. Poster presented at: 19th Annual Meeting of the International Society for Computer Assisted Orthopaedic Surgery2019; New York, USA.
  2. Kopjar B, Schwarzkopf R, Chow J, et al. NAVIO Robotic Assisted Surgical System for Total Knee Arthroplasty Using JOURNEY II Guided-Motion Total Knee System. Poster presented at: ISTA 2-5 October, 2019; Toronto, Canada.
  3. Geller JA, Rossington A, Mitra R, Jaramaz B, Khare R, Netravali NA. Rate of learning curve and alignment accuracy of an image-free handheld robot for total Knee Arthroplasty. European Knee Society Arthroplasty Conference;2019; Valencia, Spain.
  4. Kaper BP, Villa A. Accuracy and Precision of a Handheld Robotic-guided Distal Femoral Osteotomy in Robotic-assisted Total Knee Arthroplasty. European Knee Society Arthroplasty Conference;2019; Valencia, Spain
  5. National Joint Registry for England, Wales and Northern Ireland: LEGION Revision OXINIUM (with Revision Tibial) implant summary report. 17 August 2022.
  6. We thank the patients and staff of all the hospitals in England, Wales and Northern Ireland who have contributed data to the National Joint Registry.

*We are grateful to the Healthcare Quality Improvement Partnership (HQIP), the NJR Steering Committee and staff at the NJR Centre for facilitating this work. {Additional Contributors to be added where necessary}. The views expressed represent those of Smith+Nephew and do not necessarily reflect those of the National Joint Registry Steering Committee or the Health Quality Improvement Partnership (HQIP) who do not vouch for how the information is presented.

The data used for this analysis was obtained from the National Joint Registry (“NJR”), part of the Healthcare Quality Improvement Partnership (“HQIP”). HQIP, the NJR and/or its contractor, Northgate Public Services (UK) Limited (“NPS”) take no responsibility (except as prohibited by law) for the accuracy, currency, reliability and correctness of any data used or referred to in this report, nor for the accuracy, currency, reliability and correctness of links or references to other information sources and disclaims all warranties in relation to such data, links and references to the maximum extent permitted by legislation including any duty of care to third party readers of the data analysis.

Source: Smith+Nephew.

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