Abstract
Purpose
This study aims to evaluate the two-year post-operative clinical outcomes of patients undergoing total knee arthroplasty (TKA) with computer-assisted surgery (CAS) using a pinless navigation system (BrainLAB® VectorVision® Knee 2.5 Navigation System) versus standard CAS.
Methods
We analysed prospectively collected data from patients who underwent TKA with CAS from November 2008 to October 2012 over a two year follow-up period by a single senior surgeon. Primary outcome measures include Short-Form 36 (SF-36), Oxford Knee (OKS) as well as Knee Society Scores (KSS).
Results
100 patients were recruited in both arms of the study. Patients in the pinless navigation arm underwent a shorter duration of surgery compared to those in the standard CAS arm with 72±13 min and 83±11 min respectively (p<0.001). There was improvement in OKS for both in pinless navigation arm and standard CAS arm from 34±8 to 18±5 (p<0.001) and 34±9 to 18±5 respectively. This improvement was reflected in the SF-36 as well as KSS. The study did not detect any statistically significant differences in clinical outcomes between the two arms at two-year follow-up.
Conclusion
Pinless navigation in TKA with CAS provides improvement in clinical outcomes that are similar to patients who underwent standard CAS with a shorter duration of surgery.
