10-Year Multicentre Clinical Follow-Up
EVOLUTION® NitrX™ Total Knee System
A multicentre prospective post-market follow-up evaluating long-term implant durability, functional recovery, radiographic stability and patient-reported outcomes after primary total knee replacement.
Cohort
150 TKRs
Follow-Up
Up to 10 yr
Design
Multicentre
Setting
Real-World
Study at a Glance
Built to observe outcomes — and to build a longitudinal understanding.
Total knee replacement evolves with surgical insight, material science, and patient expectations. This study was designed not as a single endpoint but as one chapter in a continuing programme of clinical evaluation.
Components Evaluated
- EVOLUTION® NitrX™ CS / CR femoral component
- EVOLUTION® NitrX™ non-porous keeled tibial baseplate
- EVOLUTION® MP CS tibial insert
Evaluation Milestones
1 yr
3 yr
5 yr
7 yr
10 yr
Outcomes assessed: implant survivorship · validated patient-reported outcome measures · radiographic evaluation · structured safety monitoring.
Key Findings
A decade of consistent performance.
Sustained Implant Durability
EVOLUTION® NitrX™ components demonstrated strong survivorship and durable fixation across all follow-up milestones.
Meaningful Functional Recovery
Substantial pain relief and gains in knee function were maintained throughout follow-up, supporting a return to daily activity.
Quality-of-Life Restoration
Health-related quality of life measures improved consistently after surgery and remained sustained over time.
Radiographic Stability
Serial imaging showed stable component positioning. Radiolucencies were monitored systematically and remained within expected post-operative patterns.
Long-Term Safety
Revision rates and adverse event profile were consistent with contemporary arthroplasty standards across the 10-year period.
Longitudinal Insight
Continuous data collection at defined milestones built a longitudinal understanding of implant performance — not just a snapshot.
Beyond Completion
A living evidence base.
This study marks the completion of a defined follow-up phase, but it forms part of a broader and continuing programme of clinical evaluation. We monitor outcomes over time, refine based on data, compare against contemporary benchmarks, and contribute to continuous improvement.
For Patients
Reassurance that durability and function extend well beyond the early post-operative years.
For Surgeons
Long-term clinical evidence to inform decision-making and refine surgical technique.
For the System
An expanding foundation of performance data supporting ongoing optimisation.
Long-term evidence informs design evolution.
Real-world data guides future optimisation. See where this body of work feeds the ongoing knee arthroplasty programme.