Continuum™, Trilogy® IT, Allofit® IT Acetabular Systems Longevity® Highly Crosslinked Polyethylene Constrained Liner - Constrained polyethylene acetabular liner

Intended purpose

The Longevity IT Constrained Liner is indicated as a component of a total hip prosthesis in primary or revision total hip arthroplasties where there is a high risk of hip dislocation due to a history of instability, bone loss, joint, muscle or tissue laxity, or disease condition. This device is intended for patients for whom all other options to constrained acetabular components have been considered.

Functional description

The Longevity® IT Constrained Liner, a component of the Continuum™, Trilogy® IT and Allofit® IT Acetabular Systems, consists of a highly crosslinked ultra-high molecular weight polyethylene (UHMWPE) liner & Tivanium® Ti-6Al-4V alloy constraining ring. It features two fingers, extending beyond the equator of the shell to mechanically capture the femoral head. The constraining ring snaps onto the liner to reinforce capture of the femoral head within the liner. Indicated for uncemented use.