Ten-year functional outcomes and up to 18-year survivorship of computer-navigated total knee arthroplasty: analysis of 1677 cases from a high-volume centre

Purpose
This study aimed to contribute to the evidence base for computer-navigated TKA by providing long-term survivorship and functional outcomes in a large single-centre series, addressing the limited follow-up duration and sample sizes in existing literature.

Methods
This retrospective study analysed 1677 consecutive computer-navigated Columbus TKA procedures performed between 2005 and 2011. Patient-reported outcomes were assessed through 10 years, with survivorship assessed at average 14 years (maximum 18 years). Kaplan-Meier analysis and Cox regression identified revision risk factors.

Results
Mean patient age was 68.8 years with 57.2% female patients. Patient-adjusted survivorship was 98.7% (14 years) and 97.0% (18 years). Sixty-one revisions occurred (3.6%), predominantly due to infection. Significant revision predictors included younger age, greater preoperative varus deformity, and poorer one-year Oxford Knee Score.

Conclusion
Computer-navigated TKA demonstrates excellent long-term functional outcome and implant survivorship. Early functional outcomes showed predictive value for long-term survival, which could inform risk stratification approaches.