Robot-assisted total knee arthroplasty improves mechanical alignment and accuracy of component positioning compared to the conventional technique

Purpose The purpose of this study was to compare the mechanical axis, accuracy of component positioning, and polyethylene liner thickness between robot-assisted total knee arthroplasty (TKA) and conventional TKA. Methods From July 2020 to December 2020, 154 TKAs were performed in 110 patients with K...

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Veröffentlicht in:Journal of Experimental Orthopaedics 2022-10, Vol.9 (1), p.108-108, Article 108
Hauptverfasser: Nam, Chang Hyun, Lee, Su Chan, Kim, Jin-Hong, Ahn, Hye Sun, Baek, Ji-Hoon
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Sprache:eng
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Zusammenfassung:Purpose The purpose of this study was to compare the mechanical axis, accuracy of component positioning, and polyethylene liner thickness between robot-assisted total knee arthroplasty (TKA) and conventional TKA. Methods From July 2020 to December 2020, 154 TKAs were performed in 110 patients with Kellgren-Lawrence grade IV varus knees using a robot-assisted system (MAKO group). Additionally, 110 propensity score-matched patients who had undergone primary conventional TKA were chosen in a one-to-one ratio for the conventional group. Post-operative radiographs were used to evaluate mechanical axis and component coronal and sagittal positioning. The polyethylene liner thickness was investigated. The respective mean error values and outliers were obtained for the two study groups and were compared to determine the mechanical axis and the accuracy of the postoperative component positioning. Results Patients in the MAKO group achieved better accuracy than those in the conventional group in terms of postoperative mean mechanical axis (1.9˚ vs. 2.8˚, p  
ISSN:2197-1153
2197-1153
DOI:10.1186/s40634-022-00546-z