While total knee arthroplasty has demonstrated clinical success, final bone cut and final component alignment can be critical for achieving a desired overall limb alignment. This cadaver study investigated whether robotic-arm assisted total knee arthroplasty (RATKA) allows for accurate bone cuts and component position to plan, compared to manual technique. Six cadaveric specimens (12 knees) were prepared by an experienced user of manual total knee arthroplasty (MTKA), who was inexperienced in RATKA. For each cadaveric pair, a RATKA was prepared on the right leg and a MTKA was prepared on the left leg. Final bone cuts and final component position to plan were measured relative to fiducials, and medians and standard deviations were compared. Accuracy to plan was defined by the median values of the absolute deviation from plan. Standard deviation was used to describe the precision to plan. Two-Variance assessment using Levene's test was performed to evaluate for differences between precision of the two techniques.When comparing all six matched pairs, RATKA bone cuts were as or more accurate to plan than the MTKA control for 11/12 bone cut measurements. Similarly, RATKA bone cuts were as or more precise to plan than the MTKA control on all femoral bone cuts. Additionally, RATKA final component positions were as or more accurate to plan than the MTKA control for all measurements. Similarly, RATKA final component positions were as or more precise to plan than MTKA for all femoral implant positions, as well as the tibial varus/valgus implant position. A comparison of the standard deviations for the last three RATKA and MTKA matched pairs showed that RATKA was In general, RATKA demonstrated greater accuracy and precision of bone cuts and component placement to plan, respectively, compared to MTKA in this cadaveric study. For further confirmation, RATKA accuracy of component placement should be investigated in a clinical setting.