Date of Award
Chadd W. Clary
Peter J. Laz
Mark E. Siemens
Accuracy, Orthopaedics, Resection, Robotics, Total knee arthroplasty
Total knee arthroplasty (TKA) is a procedure where the arthritic surfaces of the knee is removed and replaced with a combination of metal and polymer implants that recreates the joint line to restore function and quality of life. Implant alignment is important in the success of a TKA. Modern day conventional instrumentation can be cumbersome in the operating room and can be inaccurate when resecting bone and aligning implants. Patients with large errors in resections and implant orientation are more prone to experience mechanical failures with their TKA. Mechanical failures in primary TKA require revision surgeries which can lead to further iatrogenic effects. New technology has been created to reduce these errors such as computer-aided surgery and robotic assisted total knee arthroplasty (RATKA). The purpose of this study was to measure the accuracy and precision of femoral and tibial osteotomies and implant alignment between RATKA and conventional total knee arthroplasty (CTKA). The results showed that coronal plane resection errors improved from 1.39° ± 0.95° to 0.65° ± 0.50° and implant alignment absolute errors improved from 1.42° ± 1.15° to 0.91° ± 0.83° for RATKA cases. Improvements were also seen for sagittal plane implant alignment and femoral relative resections for RATKA cases. Other measures reported non-inferiority and there was no statistical difference in the flatness of the proximal resection (p = 0.36) between CTKA and RATKA.
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Doan, Gary, "An Accuracy and Precision Analysis of the VELYS™ Robotic Assisted Solution for Total Knee Arthroplasty" (2021). Electronic Theses and Dissertations. 1909.
Received from ProQuest
Biomechanics, Biomedical engineering, Mechanical engineering