Trilogy® Acetabular System Constrained Liner - Constrained polyethylene acetabular liner

Intended purpose

The Trilogy acetabular system constrained liner is indicated for either cemented or noncemented use as a component of a total hip prosthesis in primary or revision patients at high risk of hip dislocation due to a history of prior dislocation, bone loss, soft tissue laxity, neuromuscular disease, or intraoperative instability and for whom all other options to constrained acetabular components have been considered.

Functional description

Device consists of a liner and reinforcing ring. The ultra-high UHMWPE liner fits into the metal shell and articulates with metal femoral head. The articular surface opening of the Trilogy Constrained Liner is reduced slightly to allow for mechanical capture of the femoral head.