Survivorship analysis of 1,430 cemented primary TKAs performed at Hospital for Special Surgery over 15 years, comparing three sequential implant generations: total condylar (all-polyethylene tibia), posterior stabilized with polyethylene tibia, and posterior stabilized with metal-backed tibia. Uses life-table methodology to quantify annual and cumulative failure rates and to assess whether patient factors influence implant longevity.
Metal-backed tibial components showed superior early survivorship compared to all-polyethylene designs, with no loosening-related revisions observed.
This data supports the durability advantage of metal-backed components in cemented TKA, though longer follow-up would be needed to confirm sustained superiority.
Survivorship analysis of 1,430 cemented primary TKAs performed at Hospital for Special Surgery over 15 years, comparing three sequential implant generations: total condylar (all-polyethylene tibia), posterior stabilized with polyethylene tibia, and posterior stabilized with metal-backed tibia. Uses life-table methodology to quantify annual and cumulative failure rates and to assess whether patient factors influence implant longevity.
Metal-backed tibial components showed superior early survivorship compared to all-polyethylene designs, with no loosening-related revisions observed.
This data supports the durability advantage of metal-backed components in cemented TKA, though longer follow-up would be needed to confirm sustained superiority.