Robotic-assisted surgery and functional alignment in total knee arthroplasty: the RASKAL registry-nested 2 × 2 factorial randomized trial.

Key Points

• To evaluate whether robotic-assisted surgery and functional alignment enhance outcomes compared to computer-assisted and mechanical alignment in total knee arthroplasty.
• Conducted a 2 × 2 factorial randomized trial involving robotic-assisted and computer-assisted surgery techniques.
• Examined outcomes of functional alignment versus mechanical alignment.
• Followed patients for clinical and functional outcomes up to two years post-surgery.
• Robotic-assisted surgery did not show superior outcomes compared to computer-assisted surgery.
• Functional alignment did not improve outcomes compared to mechanical alignment.
• No significant differences were noted in clinical and functional outcomes at the two-year mark.