Trabecular Metal Revision Shell The Trabecular Metal Revision Shell provides both initial and long-term stability due to its high coefficient of friction against bone with up to 80% porosity to enable ingrowth. Low modulus of elasticity of Trabecular Metal material can produce more normal physiological loading and reduce stress shielding. One-piece construct, created by cementing the liner, eliminates concerns about backside wear. Elliptical geometry creates a 2-mm interference fit at the periphery of the shell, maximizing bone contact for initial stability. The shell is designed for use in revision and primary cases, and it is placed in best position for maximum host bone contact, while 0 degree neutral and 10 degree oblique liners allow for preferred version. Dome screw holes allow for additional fixation into structural bone. Longevity® Highly Crosslinked Polyethylene liners in various configurations are available to best meet patient needs. Trabecular Metal Material has physical and mechanical properties similar to cancellous bone due to its high compressive strength and low modulus of elasticity.