https://www.selleckchem.com/products/sc79.html To explore the short-term effectiveness of domestic robot-assisted total knee arthroplasty (RATKA) conducted by a prospective randomized controlled trial. Patients who were scheduled for primary unilateral TKA between October 2020 and December 2020 were eligible in this randomized controlled trial. According to the random number table method, they were allocated to the traditional TKA group and the RATKA group [application of the Yuanhua robotic-assisted TKA (YUANHUA-TKA) system during operation]. A total of 63 patients met the selection criteria were enrolled in the study, of which 3 cases voluntarily withdrew from the trial. And finally 60 cases were enrolled for analysis; of which 28 cases were in the RATKA group and 32 cases were in the traditional TKA group. There was no significant difference in gender, age, body mass index, American Society of Anesthesiologists (ASA) classification, duration of osteoarthritis, surgical side, and preoperative knee visual analogue scale (VAS) resting and motion scoreosening or sinking. There were significant differences in the HKA deviation between pre- and post-operation in the two groups ( <0.05), but the difference of pre- and post-operative HKA deviation between the two groups was not significant ( =1.254, =0.267). There was no significant difference in FFC, FTC, and LFC between the two groups ( >0.05); the LTC was significantly smaller in the RATKA group than in the traditional TKA group ( =17.819, =0.000), which was closer to the ideal value. YUANHUA-TKA system can improve the accuracy of osteotomy and the prosthesis placement as well as the lower limb alignment. Its short-term effectiveness can be promised, but long-term effectiveness needs to be further studied. YUANHUA-TKA system can improve the accuracy of osteotomy and the prosthesis placement as well as the lower limb alignment. Its short-term effectiveness can be promised, but long-term effectiveness needs to be furthe