New Technology for Total Knee Arthroplasty Provides Excellent Patient-Reported Outcomes: A Minimum Two-Year Analysis

Area of Science:

• Orthopedic Surgery
• Medical Technology
• Biomechanical Engineering

Background:

• Robotic-assisted total knee arthroplasty (TKA) shows promise for improving patient-reported outcome measures (PROMs).
• Limited data exists on PROMs for robotic TKA beyond one year.
• This study addresses the need for longer-term outcome data in robotic TKA.

Purpose of the Study:

• To report multicenter patient-reported outcomes using multiple metrics for robotic-assisted TKA.
• To report postoperative surgeon-specific outcomes at a minimum two-year follow-up.

Main Methods:

• 188 robotic-assisted TKAs performed by five surgeons.
• Patients evaluated using Short Form-12 (SF-12), Forgotten Joint Score (FJS), and Knee Society Scores (KSS).
• Minimum two-year follow-up for all patients.

Main Results:

• Excellent postoperative outcomes reported across all PROMs.
• Mean SF-12 scores (MCS and PCS) were 57, exceeding the norm-based threshold of 50.
• Mean FJS was 75, mean KSS functional score was 84, and mean Knee Score was 92.
• Low aseptic revision rate (1.06%) and few complications (3.7%).

Conclusions:

• Robotic-assisted TKA demonstrates excellent patient outcomes across multiple metrics at two years.
• Results support the continued use of robotic technology in total knee arthroplasty.
• Future research should focus on larger cohorts and extended follow-up intervals.