Liner Options

The FMP™ system offers a number of liner options to accommodate surgical needs and surgeon preference. Standard liners, offset liners, metal-on-metal liners, and constrained liners make the FMP system highly versatile.

Polyethylene Liners
The FMP system is designed to allow for maximum polyethylene. Minimum polyethylene thickness is 6mm. DJO Surgical uses ultra-high molecular weight polyethylene (UHMWPE) that has been compression molded. The polyethylene is sterilized by gamma radiation in the absence of oxygen.

Polyethylene Liner Congruency
Optimal UHMWPE liner conformity reduces contact stresses by increasing the surface area available for load transfer, and decreases the potential for permanent material deformation and back-side wear. The FMP acetabular system is designed to maximize the support of the polyethylene by conforming to the congruency of the shell.

Metal Acetabular Liner
In a wear-rate test of metal-on-metal v. alumina-on-polyethylene, the wear of the metal-on-metal articulation was significantly decreased. This reduction was even more substantial when compared to the wear rate of the current standard of metal-on-polyethylene³.
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