Absence of Component Loosening in Cementless Deep Dish Rotating Platform Knee at 5 Years

Overview

This prospective study evaluated the 5-year clinical and radiologic outcomes of the cementless Vanguard Deep Dish Rotating Platform Knee in patients with severe knee osteoarthritis. Results demonstrated no aseptic loosening and favorable clinical scores, supporting the safety and efficacy of this cementless TKA implant at mid-term follow-up.

Background

Total knee arthroplasty (TKA) traditionally uses cemented fixation, which has proven long-term success with low aseptic loosening rates. However, cementless fixation has gained interest due to potential benefits including preservation of bone stock, avoidance of cement debris, and biological fixation. With increasing numbers of younger, more active patients undergoing TKA, cementless implants may offer advantages in durability. Current literature shows comparable short- and mid-term outcomes between cemented and uncemented TKA, but no definitive recommendation exists. This study is the first prospective investigation of the cementless Vanguard Deep Dish Rotating Platform Knee implant at 5 years.

Data Highlights

Key Findings

• No cases of aseptic component loosening were observed during the 5-year follow-up.
• Radiographic assessments showed stable implant positioning without radiolucent lines.
• Clinical outcome scores improved significantly postoperatively, indicating good knee function and pain relief.
• The cementless Vanguard Deep Dish Rotating Platform Knee demonstrated a low revision rate.
• Immediate full weight bearing was well tolerated with no adverse impact on implant stability.

Clinical Implications

The findings support the use of cementless fixation with the Vanguard Deep Dish Rotating Platform Knee as a safe and effective option for patients requiring TKA, especially younger and more active individuals. Surgeons can consider this implant to potentially preserve bone stock and achieve durable biological fixation without increased risk of loosening at mid-term follow-up.

Conclusion

Cementless TKA using the Vanguard Deep Dish Rotating Platform Knee provides excellent mid-term implant stability and clinical outcomes with no aseptic loosening at 5 years. This implant represents a viable alternative to cemented fixation in appropriate patients.

References

1. Healy et al. -- Standardized list and definitions of the Knee Society
2. Meneghini et al. -- Radiographic evaluation system for TKA