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Improvement in Primary Resection Accuracy with Image Free Robotic Assisted Total Knee Arthroplasty Compared to Navigation

EasyChair Preprint no. 9191

4 pagesDate: October 31, 2022

Abstract

Several studies have been performed that compare the accuracy of Robotic-Assisted Total Knee Arthroplasty (RATKA) to conventional instrumentation as well as navigation to conventional instrumentation, yet there is a lack of studies comparing RATKA to navigation. The purpose of this study is to evaluate the accuracy of a contemporary image free navigation system for TKA in a cadaveric study using the same methodology as used previously to access the accuracy of a RATKA system and Conventional instrumentation. Methods: Four orthopaedic surgeons performed bi-lateral TKA on 18 pelvis-to-toe cadaveric specimens without implantation using the BrainLab Knee3 navigation system. Pre-operative and post-operative computed tomography scans were taken to access the resection accuracy of the navigation system relative to alignment targets recorded intraoperatively. Results: The mean error in femoral coronal angle was 1.08°±0.87° compared to 1.39° ± 0.95° conventional and 0.63° ± 0.50° RATKA; the differences between navigation and RATKA were statistically significant. The mean error in the tibial coronal angle was 1.24° ± 1.13° compared to 1.65° ± 1.29° conventional and 0.93° ± 0.72° RATKA. The mean error in femoral flexion was 2.13° ± 1.87° compared to 3.27° ± 2.51° conventional and 1.21° ± 0.90° RATKA; the differences between navigation and manual and navigation and RATKA were statistically significant. The mean errors in the femoral rotation (navigation 1.30° ± 1.38°, conventional 1.00° ± 0.70°, RATKA 1.04° ± 0.81°) and tibial slope (navigation 1.89°±1.28°, conventional 1.63°±1.39°, RATKA 1.62°±1.13°) were similar between the groups. Conclusion: This study showed that for some metrics navigation improves resection accuracy compared to conventional instrumentation and RATKA further improves resection accuracy compared to navigation.

Keyphrases: Accuracy, robotic surgery, Total knee arthroplasty

BibTeX entry
BibTeX does not have the right entry for preprints. This is a hack for producing the correct reference:
@Booklet{EasyChair:9191,
  author = {Gary Doan and Andrew Van Avery and Patrick Courtis and Ian Leslie and Dan Hoeffel and Chadd Clary},
  title = {Improvement in Primary Resection Accuracy with Image Free Robotic Assisted Total Knee Arthroplasty Compared to Navigation},
  howpublished = {EasyChair Preprint no. 9191},

  year = {EasyChair, 2022}}
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