Similar short-term clinical outcomes, such as reduction of mechanical axis alignment and joint-line deviation outliers, were found among patients who underwent robot-assisted and conventional total knee arthroplasty, according to study results.
From May 2012 to December 2012, researchers randomly assigned 31 patients to undergo robot-assisted total knee arthroplasty (TKA) and 29 patients to conventional TKA. Patients had weight-bearing radiographs taken at 1-month follow-up. The researchers examined clinical outcome markers, such as postoperative Knee Society score, Knee Society function score, Oxford knee score, SF-36 score and range of motion, at 6 months. Additionally, operative times, length of hospital stay and any perioperative complications were recorded, as well.
Results showed no overall difference at 6-month follow-up in terms of clinical outcome measures. However, the robot-assisted group demonstrated higher SF-36 vitality scores, according to the researchers.
The researchers also found the conventional group had 19.4% coronal plan mechanical axis outliers and 10.3% cases with anterior femoral notching compared with the robot-assisted group. According to study results, the robot-assisted group had 3.2% joint line shift outliers vs. 20.6% in the conventional group. – by Casey Tingle
Disclosure: The authors have no relevant financial disclosures.