Discussion
REGRESSION
Robotic-assisted knee replacement is the hotspot in the field of total knee replacement. Theoretically, robotic-assisted knee replacement can result in better lower limb alignment. However, it is still controversial whether there is an advantage with regard to alignment improvement with robotic-assisted knee replacement compared with conventional knee replacementImproved lower limb alignment and component positioning in TKA are important factors to ensure satisfactory postoperative function, patient satisfaction, and prosthesis survivalTo date, many studies comparing RAS and CON with regard to the effectiveness of improving prosthesis positions and lower limb alignment and postoperative function have been reported, but the conclusions are contradictory. Khlopas In this study, by the means of single-factor and multifactor linear regression analysis, it was found that the preoperative HKA angle deviation would affect the recovery of the postoperative HKA angle deviation (This study still has many limitations. First, we cannot eliminate the impact of the small sample size in this study on the results. Second, this study only made a short-term follow-up observation of patients, and the long-term effect of RAS remains unclear. Third, the bias that exists in this study is that in the RAS group, because surgeons invested a lot of time and cost, they will inevitably operate more carefully in the surgery, so this factor may have influenced the results of the study. Finally, the centers included in this study were centers where a large number of knee replacements are performed in China, and all investigators were prominent Chinese joint surgeons; the skill level of the surgeons could have influenced the results.