Robotic Orthopaedic Institute™

Understanding joint replacement technologies
available in Southern Utah

By collecting patient-specific information, boundaries are established for the hand piece so the surgeon can remove the damaged surfaces of the knee, balance the joint, and position the implant with greater precision.

The robotics and AI enhance control of the your unique anatomy to improve outcomes including proper size, implant positioning, soft-tissue balance, and lower limb alignment,.

Please call us to ask any questions:


Robotic-assisted Joint Replacement
Systems in Southern Utah

Smith & Nephew NAVIO Robotic-assisted technology used by Dr Hicken and only available at St George Surgical Center and Mesa View Regional Hospital

Medicare Coverage for Robotic Knee & Hip Replacement Surgery

Smith & Nephew CORI Robotic-assisted technology used by Dr Hicken and only available at St George Surgical Center

Key Comparisons

  • Robotic-assisted total knee arthroplasty (RA-TKA) delivers improved consistency for precision and accuracy in the placement, alignment, balancing,  and restoration of function
  • Greater cost savings in a 90-day episode of care (typical) compared to knee replacement done without robotic or computer assisted navigation systems 
  • Meets the demands of patients, insurers, employer- and union-sponsored health plans for better quality of care, lower costs and “value-based” options
  • Insurers and patients demand higher-quality, longer service-life implants and lower complications and fewer revisions (“do overs”)
  • Recent published, unbiased literature (April 2021) indicates “robotic-assisted (RA-TKA) outcomes are leading the way forward

Two Robotic-assisted Joint Replacement Systems and one Computer Navigation System in St George

*No joint replacement robot is available at St George Regional Hospital (formerly, Dixie Regional)


  1. With OmniBot, only “total” knee replacements are possible, even if the patient only requires a “partial” or “uni-compartmental” implant. 
  2. With Mako and OmniBot, a pre-operative CT scan is required, equal to about 10x the radiation exposure of that of a flight across the USA
  3. Oxinium (oxidized zirconium) implants, available exclusively through Smith & Nephew using the NAVIO and CORI systems, improves hardness, lubricity, (the reduction of friction of the parts that touch each other during normal knee motion), and abrasion resistance (the ability of materials and structures to withstand the wearing down or rubbing away of the material by means of friction). It has an FDA-rated 30 year service life.
  4. Oxinium is a ceramicized metal bearing surface that reduces risk of fracture. The surface is chemically transformed, it is not a “coating”. 
  5. With robotic joint replacements, research indicates reduced postoperative soft tissue swelling in the robotic cohort may limit local inflammatory response resulting in decreased pain and postoperative swelling. It may also result in quicker increased postoperative range of motion 
  6. Research indicates that robotic-assisted knee replacement patients tend to have have less postoperative pain, and tend to need less pain medication. 
  7. Research indicates that robotic-assisted knee replacement patients tend to require reduced physical therapy duration 
  8. Robotic-assisted technology actively controls or restrains the surgeon from making movements outside the area where bone should be removed
  9. With the Robotic-assisted technology, the robotic physically assists the surgeon in executing the preoperative plan with a high level of precision and accuracy by preventing accidental slips and movements outside the planned cutting zones when removing bone prior to placing the implant.


  1. R.H. Zimlich, M. Levesque, W. Jones, H.D. Schutte, Jr., B.J. Livingston, W. Sauer, M. Spector, and K. Weaver, “In-vitro and in-vivo effect of particulate debris on TKA articulating surfaces”, scientific exhibit SE038, 65th Ann. Mtg. Am. Acad. Orthop. Surg., New Orleans, LA, March 19-23, 1998.
  2. M. Levesque, B.J. Livingston, W.M. Jones, and M. Spector, “Scratches on condyles in normal functioning total knee arthroplasty”, Trans. 44th Ann. Mtg. Orthop. Res. Soc., Orthopaedic Research Society, Chicago, IL, 1998, p. 247.
  3. M. Long, L. Riester, and G. Hunter, “Nano-hardness measurements of oxidized Zr-2.5Nb and various orthopaedic materials”, Trans. Soc. Biomaterials, 21, 1998, p. 528.
  4. G. Hunter and M. Long, “Abrasive wear of oxidized Zr-2.5Nb, CoCrMo, and Ti-6Al-4V against bone cement”, 6th World Biomaterials Cong. Trans., Society For Biomaterials, Minneapolis, MN, 2000, p. 835.
  5. G. Hunter, “Adhesion testing of oxidized zirconium”, Trans. Soc. Biomaterials, 24, 2001, p. 540.
  6. S. Tsai, J. Sprague, G. Hunter, R. Thomas, and A. Salehi, “Mechanical testing and finite element analysis of oxidized zirconium femoral components”, Trans. Soc. Biomaterials, 24, 2001, p. 163.
  7. L. Que, L.D.T. Topoleski, and N.L. Parks, “Surface roughness of retrieved CoCrMo alloy femoral components from PCA artificial total knee joints”, J. Biomed. Mater. Res., 53 (1), 1999, pp. 111- 118.
  8. J.G. Lancaster, D. Dowson, G.H. Isaac, and J. Fisher, “The wear of ultra-high molecular weight polyethylene sliding on metallic and ceramic counterfaces representative of current femoral surfaces in joint replacement”, Proc. Instn. Mech. Engrs., 211 (H1), 1997, pp. 17-24.
  9. J. Fisher, P. Firkins, E.A. Reeves, J.L. Hailey, and G.H. Isaac, “The influence of scratches to metallic counterfaces on the wear of ultra-high molecular weight polyethylene”, Proc. Instn. Mech. Engrs., 209 (H4), 1995, pp. 263-264.
  10. J.L. Hailey, E. Ingham, M. Stone, B.M. Wroblewski, and J. Fisher, “Ultra-high molecular weight polyethylene wear debris generated in vivo and in laboratory tests; the influence of counterface roughness”, Proc. Instn. Mech. Engrs., 210 (H1), 1996, pp. 3-10.
  11. B. Weightman and D. Light, “The effect of the surface finish of alumina and stainless steel on the wear rate of UHMW polyethylene”, Biomaterials, 7 (1), 1986, pp. 20-24.
  12. H. Oonishi, Y. Hanatate, E. Tsuji, and H. Yunoki, “Comparisons of wear of UHMW polyethylene sliding against metal and alumina in total knee prostheses”, Bioceramics, H. Oonishi, H. Aoki, and K. Sawai (eds.), Ishiyaku EuroAmerica, Tokyo, 1989, pp. 219-224.
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  16. R.Barrack, F.Castro, E. Szuszczewicz, T.Schmalzried, “Analysis of Retrieved Uncemented Porous-Coated Acetabular Components in Patients With and Without Pelvic Osteolysis”, Orthopedics, 25:12, 2002, pp. 1373-1378.
  17. Sychterz CJ, Engh CA Jr, Swope SW, McNulty DE, Engh CA, “Analysis of prosthetic femoral heads retrieved at autopsy”, Clin Orthop. 1999 Jan; (358):223-34.
  18. R.A. Poggie, J.J. Wert, A.K. Mishra, and J.A. Davidson, “Friction and wear characterization of UHMWPE in reciprocating sliding contact with Co-Cr, Ti-6Al-4V and zirconia implant bearing surfaces”, Wear and Friction of Elastomers, ASTM STP 1145, R. Denton and M.K. Keshavan (eds.), American Society for Testing and Materials, Philadelphia, PA, 1992, pp. 65-81.
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