ArticleKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2025
High in-vivo accuracy of a novel robotic-arm-assisted system for total knee arthroplasty.
Article in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- Comparison of the Reliability and Gap Differences Between Using the Varus-Valgus Stress Technique and Paddles Technique in Pre-Resection Balancing Phase of Robotic-Assisted Total Knee Arthroplasty.Arthroplasty today · 2026Article
- Comparative analysis of HURWA versus MAKO robotic-assisted TKA: a prospective cohort study of surgical accuracy and clinical outcomes.Journal of robotic surgery · 2026Article
- The future of robotic surgery in joint arthroplasty : Current platforms, emerging technologies and outlook for 2035.Orthopadie (Heidelberg, Germany) · 2025Review
- Accuracy of ROSA Knee System in Bone Cuts Orientation During Total Knee Arthroplasty: An Observational Study.Journal of clinical medicine · 2025Article
- Short learning curve associated with robotic total knee arthroplasty: A retrospective study.Journal of experimental orthopaedics · 2025Article
- Intraoperative gap assessment in robotic-assisted bicruciate retaining TKA for knee osteoarthritis.Scientific reports · 2025Article
- Global trends and hotspots in robot-assisted arthroplasty: a CiteSpace-based bibliometric and visualized analysis.Journal of robotic surgery · 2025Review
- High in-vivo accuracy of a novel robotic-arm-assisted system for total knee arthroplasty.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2025Article
- Same same but different-Image-based versus imageless robotic-assisted total knee arthroplasty!Journal of experimental orthopaedics · 2024Article
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Authors and funding
7 authors.
Funding
Abstract
purposeRobotic-assisted total knee arthroplasty (TKA) has been shown to improve the accuracy and precision of bony resections and implant position. However, the in vivo accuracy of the full surgical workflow has not been widely reported. The primary objective of this study is to determine the accuracy and precision of a robotic-arm-assisted system throughout the intraoperative workflow.
methodsThis was a retrospective cohort study of adult patients who underwent primary TKA with various workflows and alignment targets by three arthroplasty-trained surgeons with previous experience using the ROSA® Knee System (Zimmer Biomet) over a 3-month follow-up period. Accuracy and precision were determined by measuring the difference between various workflow time points, including the final preoperative plan (PP), robot-validated (RV) resection angle and postoperative radiographs (PR). The absolute mean difference between the measurements determined accuracy, and the standard deviation represented precision. The lateral distal femoral angle, medial proximal tibial angle, femoral flexion angle and tibial slope were measured on postoperative coronal long-leg radiographs and true short-leg lateral radiographs.
resultsA total of 77 patients were included in the final analyses. The accuracy for the coronal femoral angle was 1.62 ± 1.11°, 0.75 ± 0.79° and 1.96 ± 1.29° for the differences between PP and PR, PP and RV and RV and PR. The tibial coronal accuracy was 1.44 ± 1.03°, 0.81 ± 0.67° and 1.57 ± 1.14° for PP/PR, PP/RV and RV/PR, respectively. Femoral flexion accuracy was 1.39 ± 1.05°, 0.83 ± 0.59° and 1.81 ± 1.21° for PP/PR, PP/RV and RV/PR, respectively. Tibial slope accuracy was 0.99 ± 0.72°, 1.19 ± 0.87° and 1.63 ± 1.11°, respectively. The proportion of patients within 3° was 93.2%, 95.3%, 97.3% and 94.6% for the distal femur, proximal tibia, femoral flexion and tibial slope angles when the final intraoperative plan was compared to PRs. No patients had a postoperative complication at the final follow-up.
conclusionsThe ROSA Knee System has acceptable accuracy and precision of coronal and sagittal plane resections with few outliers at various steps throughout the platform's entire workflow in vivo. LEVEL OF EVIDENCE: Level III.
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