Pinnacle Constrained Acetabular Liner - Constrained polyethylene acetabular liner

Intended purpose

The Pinnacle Constrained Acetabular Liner is indicated for 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, joint or soft tissue laxity, neuromuscular disease or intraoperative instability. The Pinnacle Constrained Acetabular Liner is indicated for use with the Pinnacle Acetabular Cup in cementless application.

Functional description

The Pinnacle Constrained Acetabular Liner is manufactured from cross-linked UHMWPE, which locks into an outer shell component. The liner component articulates with a metal femoral head of an appropriate diameter. The Pinnacle Constrained Acetabular Liner mechanically constrains the femoral head within the inner diameter of the liner with a titanium constraining ring which fits over the opening diameter of the liner. The UHMWPE liner is held in the metal shell by means of a titanium locking ring.