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Mako Total Knee
Robotic-Arm Assisted Surgery
Combines Mako Robotic-Arm Assisted Technology with the Triathlon Total Knee System. The outcomes you can achieve with the Mako Total Knee application have the potential to create the future of your orthopaedic service line.
Total knee arthroplasty (TKA) has demonstrated clinical success,1,2 however data shows mechanical axis malalignment of greater than 3° in 9.0% of computer-assisted and 31.8% of conventional TKA surgeries3
Introducing Mako Total Knee, the newest application for the Mako System. In a cadaveric study, this application demonstrated the potential to increase the accuracy of TKA bone cuts and component placement to plan, even for an experienced user of manual instrumentation who is new to robotic technology. On average, Mako Total Knee final bone cuts and final component positions were 5.0 and 3.1 times more precise to plan than the manual total knee arthroplasty control, respectively.4
Mako Total Knee demonstrated soft tissue protection, including no ligament disruption to the PCL, MCL, LCL, and patella ligament, and did not require tibial subluxation or patella eversion for visualization during cutting, in a cadaveric study.5
Our U.S. market-leading Triathlon Total Knee System has demonstrated 99% survivorship in a ten-year study6, with over 2 million implanted worldwide.7
Robotic-arm assisted total knee arthroplasty demonstrated soft tissue protection5
Methodology
- SampleSize: 14 cadaveric specimens prepared for Triathlon CR TKA using the Mako System by more than 5 surgeons with no prior clinical, robotic experience, compared to 7 specimens prepared using MTKA (manual TKA) by single surgeon.
- Presence of soft tissue disruption was assessed by having a surgeon perform visual evaluation and palpation of the PCL, MCL, LCL, and the patellar ligament after the procedures.
- Documented leg pose and retraction during bone resections - Recorded any tibial subluxation and/or patellar eversion.
Results
- RATKA (Robotic-arm assisted TKA) cases demonstrated several aspects of soft tissue protection, in this cadaveric study.
A) Manually performed TKA with arrow pointing to PCL, with no bone island preparation.
B) Robotically performed TKA, with bone island preparation in front of PCL and corresponding tibial view from Implant Planning page (showing implant plan to the actual boney anatomy, with remaining bone island). Black arrow points to PCL. White arrows outline bone island.
References:
- National Joint Registry (NJR) for England, Wales, Northern Ireland and the Isle of Man. 13th Annual Report. Available at: http//www.njrreports.org.uk/. Accessed Dec. 10, 2016.
- Julio J., et al. J Arthroplasty, 2015. 30(12): p. 2164-6.
- Mason J., et al. J Arthroplasty, 2007. 22(8): p. 1097-1106.
- Emily L. Hampp, Laura Y. Scholl, Michael Prieto, Ta-Cheng Chang, Abdullah Abbasi, Manoshi-Stoker, Jason Otto, David J. Jacofsky, Michael A. Mont. Robotic-Arm Assisted Total Knee Arthroplasty Demonstrated Greater Accuracy to Plan Compared to Manual Technique. Orthopaedic Research Society Meeting 2017, San Diego, CA.
- Hampp EL, Scholl LY, Chang T-C, Abbasi A, Bhowmik-Stoker M, Otto JK, Jacofsky DJ, Mont MA. Robotic-Arm Assisted Total Knee Arthroplasty Demonstrated Greater Accuracy to Plan Compared to Manual Technique. In: Radermacher K, Rodriguez Y Baena F, editors. CAOS 2017. 17th Annual Meeting of the International Society for Computer Assisted Orthopaedic Surgery, EPiC Series in Health Sciences, vol. 1, EasyChair; 2017, p. 299–303.
- Harwin et al. Long-Term Survivorship and Clinical Outcomes of a Single Radius Total Knee Arthroplasty. Surgical Technology International. 2016. Volume 28.
- Stryker's sales data.
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