Abstract
This study aims to investigate the functional outcomes of pinless navigation (BrainLAB
VectorVision Knee 2.5 navigation system; Munich, Germany) as an intraoperative alignment
guide in total knee arthroplasty (TKA). A prospective, 24-month follow-up study of
100 patients who were scheduled and randomized into two groups, the pinless navigation
and conventional surgery, was conducted. All TKAs were performed with the surgical
aim of achieving neutral coronal alignment with the 180-degree mechanical axis. The
outcomes measured in this study were Oxford Knee Score (OKS), Knee Society Score (KSS),
Short Form-36 (SF-36), and range of motion (ROM). At 24-month postoperatively, four
and two patients were lost to follow-up from the pinless navigation group and conventional
group, respectively. There were no significant differences in absolute scores of the
OKS, KSS, and ROM, as well as changes from preoperative baseline, between pinless
navigation and conventional groups at both 6 and 24 months postoperatively. Pinless
navigation results in comparable functional outcomes as conventional TKA at 6 and
24 months postoperatively.
Keywords
total knee arthroplasty - computer-assisted surgery - pinless navigation - functional
outcomes
