Knee Replacement Questions?

Discover new, game-changing technologies that can help you start living your full life again—a more normal feeling knee,1 a smoother recovery2,3 and implants built to last.

Discover more.
Fear less.

The ultimate knee replacement experience

See how knee replacement has changed—and what it can do for you.

A unique plan.

With 3D digital modeling you get a surgical plan that’s customized to your unique anatomy. That means your surgeon can perform your robotics-assisted procedure more efficiently and accurately than traditional knee replacement.

A natural fit.

With a robotics-assisted procedure using implants, you can keep more of your natural bone and ligaments, including the ACL. That means your body can maintain more of it’s natural rhythm and step.

A wide selection.

Every patient is unique. So why do other robotic systems restrict surgeons to only one or two implant options? Our CORI Surgical System lets your surgeon choose from a wide selection of implants available. This means that whether you’re getting a partial or a total knee replacement, you know your implant will be precision-matched to your needs.

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Feed your curiosity

Not every orthopaedic surgeon is trained to use advanced technologies.

Marianne Demo, MD

Dr. Demo is a board-certified Orthopedic Surgeon. She completed her medical school training at Loma Demo University in Demo and went on to do her orthopedic residency at the University of Demo. After residency, Dr. Demo completed an additional year of intensive surgical training covering six hospitals in the Demo, Ohio area.

Dr. Demo believes in the autonomy of patients and their ability and right to make decisions for themselves regarding their treatment. She is committed to educating her patients thoroughly regarding all medical and surgical options to help them make informed decisions before proceeding with a plan of care. Dr. Demo has a particular interest in fracture care and hip and knee replacement surgery but is also comfortable treating a broad range of other operative and non-operative orthopedic conditions.

In addition to her main office on the St. Demo’s Hospital campus, Dr. Demo also sees patients weekly in Green Demo.

Location

ACS – Demo Campus Orthopedic Surgery
1712 W. Demo Road, Suite 101
Demo, AZ 553355
(520) 555-3355
8:00 am–4:30 pm

Discover the benefits

Request an appointment with us today to learn about robotics-assisted surgery that delivers a more normal feeling knee,1 a quicker, smoother recovery2,3 and an implant built to last.

How bad is your knee pain?

Answer these common, multiple choice questions to help your doctor better understand your knee pain.

Section 1 of 3

1. Which knee is causing you problems?
2. How would you describe your knee pain?

Section 2 of 3

Section 3 of 3


Most important:
Next most important:
Third most important:
Fourth most important:

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Yes – you can

It’s time to stop settling and start getting on with your life. You can take the stairs.8 You can go for walks. You can stop being afraid. You can – with the ultimate knee replacement experience.

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The information listed on this site is for informational and educational purposes and is not meant as medical advice. Every patient’s case is unique and each patient should follow his or her doctor’s specific instructions. Please discuss nutrition, medication and treatment options with your doctor to make sure you are getting the proper care for your particular situation.

◊ Trademark of Smith+Nephew. The information on this site is intended for US residents only © 2021 Smith+Nephew
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References

  1. Hall, et al. Unicompartmental knee arthroplasty (alias uni-knee): an overview with nursing implications. Orthopaedic Nursing. 2004;23(3):163-171. Accessed April 25, 2019.
    • Based on pre-surgical pain levels in UKA patients.
  2. 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.
  3. Nodzo SR, Carroll KM, Mayman DJ. The Bicruciate Substituting Knee Design and Initial Experience. Techniques in Orthopaedics. 2018;33(1):37-41
    • Compared to non-JOURNEY II knees; Based on BCS evidence
  4. 1Short-term Range of Motion is Increased after TKA with an asymmetric bicruciatestabilized implant.AcceptedPoster Presentation, AAOS 2018 New Orleans. Kaitlin M. Carroll, Peter K. Sculco, Brian CMichaels,RichardL. Murphy, Seth A, Jerabek, David J. Mayman
  5. 2J Orthop. 2017 Jan 7;14(1):201- 206. doi: 10.1016/j.jor.2016.12.005. eCollection 2017. Bi-cruciate substituting total knee arthroplasty improved medio-lateral instability in mid-flexion range
  6.  In Vivo Kinematic Comparison of a Bicruciate Stabilized Total Knee Arthroplasty and the Normal Knee Using Fluoroscopy Trevor F. Grieco, MS a, *, Adrija Sharma, PhD a, Garett M. Dessinger, BS a, Harold E. Cates, MD b, Richard D. Komistek, PhD. The Journal of Arthroplasty, September 2017
  7. Testing concluded at 45 million cycles, ISO 14242-1 and 14243-3 define test completion at 5 million cycles. The results of laboratory wear simulation testing have not been proven to predict actual joint durability and performance in people. A reduction in wear alone may not result in improved joint durability and performance because other factors, such as bone structure, can affect joint durability and performance and cause medical conditions that may result in the need for additional surgery. These other factors were not studied as part of the testing.
  8. Iriuchishima T, Ryu K. Bicruciate substituting total knee arthroplasty improves stair climbing ability when compared with cruciate-retain or posterior stabilizing total knee arthroplasty. Indian J Orthop. 2019. doi:10.4103/ortho.IJOrtho_392_18.
  9. Smith JR, Picard F, Lonner J, et al. The accuracy of a robotically-controlled freehand sculpting tool for unicondylar knee arthroplasty. Congress of the International Society of Biomechanics. August 4-9, 2013. Natal, Brazil.
  10. Zardiackas, Lyle D., Kraay, Matthew J., Freese, Howard L, editors. Titanium, Niobium, Zirconium, and Tantalum for Medical and Surgical Applications ASTM special technical publication; 1471. Ann Arbor, MI: ASTM, Dec. 2005

Memorial Hermann Surgical Hospital First Colony complies with applicable Federal civil rights laws and does not discriminate on the basis of race, color, national origin, age, disability, or sex. Memorial Hermann Surgical Hospital First Colony is a facility in which physicians have an ownership or investment interest. The list of physician owners or investors is available upon request.

The information listed on this site is for informational and educational purposes and is not meant as medical advice. Every patient’s case is unique and each patient should follow his or her doctor’s specific instructions. Please discuss nutrition, medication and treatment options with your doctor to make sure you are getting the proper care for your particular situation.

◊ Trademark of Smith+Nephew. The information on this site is intended for US residents only © 2020 Smith+Nephew

References

*Journey II BCS.

  1. Hall, et al. Unicompartmental knee arthroplasty (alias uni-knee): an overview with nursing implications. Orthopaedic Nursing. 2004;23(3):163-171. Accessed April 25, 2019.
    • Based on pre-surgical pain levels in UKA patients.
  2. 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.
  3. Nodzo SR, Carroll KM, Mayman DJ. The Bicruciate Substituting Knee Design and Initial Experience. Techniques in Orthopaedics. 2018;33(1):37-41
    • Compared to non-JOURNEY II knees; Based on BCS evidence
  4. 1Short-term Range of Motion is Increased after TKA with an asymmetric bicruciatestabilized implant.AcceptedPoster Presentation, AAOS 2018 New Orleans. Kaitlin M. Carroll, Peter K. Sculco, Brian CMichaels,RichardL. Murphy, Seth A, Jerabek, David J. Mayman
  5. 2J Orthop. 2017 Jan 7;14(1):201- 206. doi: 10.1016/j.jor.2016.12.005. eCollection 2017. Bi-cruciate substituting total knee arthroplasty improved medio-lateral instability in mid-flexion range
  6.  In Vivo Kinematic Comparison of a Bicruciate Stabilized Total Knee Arthroplasty and the Normal Knee Using Fluoroscopy Trevor F. Grieco, MS a, *, Adrija Sharma, PhD a, Garett M. Dessinger, BS a, Harold E. Cates, MD b, Richard D. Komistek, PhD. The Journal of Arthroplasty, September 2017
  7. Testing concluded at 45 million cycles, ISO 14242-1 and 14243-3 define test completion at 5 million cycles. The results of laboratory wear simulation testing have not been proven to predict actual joint durability and performance in people. A reduction in wear alone may not result in improved joint durability and performance because other factors, such as bone structure, can affect joint durability and performance and cause medical conditions that may result in the need for additional surgery. These other factors were not studied as part of the testing.
  8. Iriuchishima T, Ryu K. Bicruciate substituting total knee arthroplasty improves stair climbing ability when compared with cruciate-retain or posterior stabilizing total knee arthroplasty. Indian J Orthop. 2019. doi:10.4103/ortho.IJOrtho_392_18.
  9. Smith JR, Picard F, Lonner J, et al. The accuracy of a robotically-controlled freehand sculpting tool for unicondylar knee arthroplasty. Congress of the International Society of Biomechanics. August 4-9, 2013. Natal, Brazil.
  10. Zardiackas, Lyle D., Kraay, Matthew J., Freese, Howard L, editors. Titanium, Niobium, Zirconium, and Tantalum for Medical and Surgical Applications ASTM special technical publication; 1471. Ann Arbor, MI: ASTM, Dec. 2005

Additional claim statements and support regarding Smith+Nephew implants and Robotics-assisted surgery

  • Implants that are built to last
  • LEGION◊CR Knee with VERILAST◊ technology was lab-tested for 45 million cycles (estimating 30 years of wear performance) and showed 81% less wear than similar 5-million cycle cobalt chrome implant.
    • Learn More
      • ISO 14243-3
      • VERILAST knee wear testing and results apply only to the VERILAST LEGION CR Primary Knee System only. Extended lab-testing for other VERILAST knee systems have not been performed. The results of laboratory wear simulation testing have not been proven to predict actual joint durability and performance in people. A reduction in wear alone may not result in improved joint durability and performance because other factors, such as bone structure, can affect joint durability and performance and cause medical conditions that may result in the need for additional surgery. These other factors were not studied as part of the testing.
  • Smith+Nephew implants may offer a more normal feeling knee
    • Based on JOURNEY◊ II BCS knee implant
    • Learn More
      • Verstaete MA, Van Onsem S, Zambianchi F, et al. Multi-centre evaluation of knee kinematics during different activities for anatomic total knee design. Poster presented at: 2nd World Arthroplasty Congress; 19-21 April, 2018; Rome, Italy.
      • Sharma A, Dessinger G, Cates H, Komistesk R. In vivo kinematic comparison for subjects having a bi-cruciate substituting TKA vs the normal knee. Poster presented at: 2nd World Arthroplasty Congress; 19-21 April, 2018; Rome, Italy.
      • Kosse NM, Heesterbeek PJC, Defoort KC, Wymenga AB, van Hellemondt GG. Improved maximal flexion after minor adaptations in implant design bicruciate-substituted total knee arthroplasty. Poster presented at 19th Congress of the European Federation of National Associations of Orthopaedics and Traumatology (EFORT); May 30 – June 1 2018; Barcelona, Spain.
  • 89% of patients were able to take the stairs again after surgery.
    • Based on JOURNEY◊ II BCS knee implant patients
      • Iriuchishima T and Ryu K. Bicruciate substituting total knee arthroplasty improves stair climbing ability when compared with cruciate-retain or posterior stabilizing total knee arthroplasty. Indian J Orthop. 2019. DOI:10.4103/ortho.IJOrtho_392_18
  • A robotics-assisted knee replacement with Smith+Nephew implants may get you back in the game six months sooner than traditional knee replacement surgery
    • Based on UKA patients
      • Canetti R, Batailler C, Bankhead C, Neyret P, Servien E, Lustig S. Faster return to sport after robotic-assisted lateral unicompartmental knee arthroplasty: a comparative study. Arch Orthop Trauma Surg. 2018;138(12):1765-1771
  • Over 90% of patients who had a Smith+Nephew knee replacement surgery returned to work within 6 months.
      • Harris AI, Luo TD, Lang JE, Kopjar B. Short-term safety and effectiveness of a second-generation motion-guided total knee system. Arthroplast Today. 2018;4:240–243. 1
  • Robotics-assisted surgery with Smith+Nephew implants may lead to a faster rehabilitation and shorter recovery time than traditional knee surgery when following your doctor’s recovery plan and physical therapy recommendations.
    • Claim 19 & 20 (PCS REC.015)
  • Due to its improved accuracy, Smith+Nephew robotics-assisted UKA has lower revision rates* compared to conventional techniques
    • Shown in clinical studies with follow-up of up to 5.5 years
      • 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 Arthrosc. 2019;27(4):1232-1240.
      • Battenberg AK, Netravali NA, Lonner JH. A novel handheld robotic-assisted system for unicompartmental knee arthroplasty: surgical technique and early survivorship. J Robot Surg. 2019;14(1):55-60.
      • Gregori A. 5 Yr Experience Semi Active Robotic Partial Knee Replacement: The Financial Impact. Poster presented at: SICOT;October, 2018; Montreal, Canada.
  • A study has shown Smith+Nephew robotic technology has demonstrated faster return to sport (4.2 vs 10.5 months) when compared to conventional techniques*
        • *n= 28 (n=11 robotic procedures), p<0.01
          • Canetti R, Batailler C, Bankhead C, Neyret P, Servien E, Lustig S. Faster return to sport after robotic-assisted lateral unicompartmental knee arthroplasty: a comparative study. Arch Orthop Trauma Surg. 2018;138(12):1765-1771
  • Robotics-assisted surgery with Smith+Nephew implants may help patient get discharged sooner
    • Study of UKA patients
      • Sephton BM, et al. EKS Arthroplasty Conference. May 2-3, 2019; Valencia, Spain.
      • Shearman AD, et al. EKS Arthroplasty Conference. May 2-3, 2019; Valencia, Spain.
  • Robotics-assisted surgery with Smith+Nephew implants may provide patients with a smoother recovery
    • 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.
  • Robotics-assisted surgery with Smith+Nephew implants may help patients regain function faster
      • Shearman AD, et al. EKS Arthroplasty Conference. May 2-3, 2019; Valencia, Spain.

Additional statements and support regarding Knee Replacement

  • More than 90% of people who have knee replacement surgery experience dramatic relief in knee pain and are better able to perform common activities.
    • Based on pre-surgical pain levels
      • American Academy of Orthopaedic Surgeon website, http://orthoinfo.aaos.org/topic.cfm
  • The majority of patients experience profound improvements in their physical activity after having knee replacement surgery.
    • Based on pre-surgical activity levels
      • Brandes M, et. al., “Changes in physical activity and health-related quality of life during the first year after total knee arthroplasty.” Clin Orthop Relat Res. 1991 Dec;(273):151-6. https://www.ncbi.nlm.nih.gov/pubmed/20981812 Accessed Wednesday, April 17, 2019