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Surgery Center in Aliso Viejo Adds New State-Of-The-Art Orthopedic Surgical Robot

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Joint replacement surgeons at the Hoag Orthopedic Institute Surgery Center Aliso Viejo, its latest surgery center that opened in August of 2023, are using a newly-acquired robotic-assisted joint replacement surgical system, called CORI by Smith + Nephew.

The new CORI robotic surgical assist technology has more than a decade of real-time application in the knee surgical theatre, and surgeons believe this innovative technology has the most potential to improve outcomes for patients undergoing knee replacement surgery.

“Robots are precise instruments that enhance a surgeon’s skills, but the CORI system is so intuitive, it is ultimate interface of doctor and machine,” says orthopedic surgeon Michael D. Hunter M.D., Hoag Orthopedic Surgery Center Aliso Viejo. “CORI robot is the only FDA-approved robot for revision knee replacement which is a significant advance in robotic knee surgery,” added Dr. Hunter. “It’s the culmination of thousands of hours of robotic operative procedures designed to complement a skilled surgeon with even more precision during surgery.”

The system facilitates a faster move to outpatient status due to its patient-specific real time alignment. This alignment allows the building of a 3D virtual model of the knee in real time, and the implant is then super imposed on the computer to determine alignment of balance before the installation of the implant. The robot allows exact duplication of the computer creation, and the implant goes in place within one millimeter of accuracy. The result is good early range of motion and quicker recovery for the patient, per Smith + Nephew. See references below.

This additional surgical robot brings the number of orthopedic surgical robotic systems within the Hoag Orthopedic Institute system to nine total.


About Hoag Orthopedic Institute
Hoag Orthopedic Institute (HOI) is located in Orange County, California. It consists of a specialty hospital located in Irvine and five ambulatory surgery centers in Aliso Viejo, Newport Beach, Mission Viejo, Orange, and Beverly Hills. HOI has more than 300 physicians on staff, including more than 80 orthopedic specialists. HOI was formed as an innovative partnership between 38 entrepreneurial physicians and Hoag Memorial Hospital Presbyterian in 2010. In 2018, HOI entered into a strategic partnership with Providence St. Joseph Health to expand access to HOI’s quality and value in the communities they serve. HOI has consistently performed in the top 5% of all Press Ganey clients for the past seven years for likelihood to recommend and overall hospital rating. HOI specializes in treatments of knee, hip and spine disorders, sports medicine, orthopedic trauma, and extremities care. Since opening in 2010, HOI’s hospital has been named by U.S. News & World Report and Becker’s Orthopedic, Spine & Pain Management Review as one of the top orthopedic hospitals in the nation. For more information, visit

References provided by Smith + Nephew:

  1. Based on JOURNEY II family of implants. Mayman DJ, Patel AR, Carroll KM. Hospital related clinical and economic outcomes of a bicruciate knee system in total knee arthroplasty patients. Poster presented at: ISPOR Symposium; May 19-23, 2018; Baltimore, Maryland, USA.
  2. Based on UKA surgery. Shearman AD, et al. EKS Arthroplasty Conference. May 2-3, 2019; Valencia, Spain.
  3. Batailler C, White N, Ranaldi FM, Neyret P, Servien E, Lustig S. Improved implant position and lower revision rate with robotic-assisted unicompartmental knee arthroplasty. Knee Surg Sports Traumatol Arthros. 2019;27(4):1232-1240
  4. Gregori A, Picard F, Lonner JH, Smith JR, Jaramaz B. Accuracy of Imageless Robotically Assisted Unicondylar Knee Arthroplasty. International Society for Computer Assisted Orthopaedic Surgery (CAOS) 15th Annual Meeting;2015; Vancover, Canada
  5. Combination of CORI along with the JOURNEY II XR
  6. Pritchett JW. Patients prefer a bicruciate-retaining or the medial pivot total knee prosthesis. J Arthroplasty. 2011;26(2):224-228
    00225 V3 JOURNEY II Design Rationale 11/17
    06791 V1 JOURNEY II XR Design Rationale 10/17