SURFACE BY DESIGN™
Provides immediate stability with surface features designed for significant friction to help prevent motion
Encourages bone cell proliferation with roughened titanium surface1,2
Promotes “mechanical fusion” bone ingrowth for short-term stability, using trabecular, bone-like surface design, with an average pore diameter of 500µm
Spira®’s open architecture, arched design has large openings for significant graft packing. It decreases the risk of subsidence due to the design’s “snowshoe effect” and provides good visibility for fusion.
Newly-forming bone grows onto and through the multiple roughened titanium arches to achieve maximum stability and complete endplate-to-endplate arthrodesis.
The implant enables easy insertion with a smooth leading edge and pockets that interlock with the inserter to provide rotational stability.
The arched design enables a distribution of load and stress throughout the cage, which is known from Wolff’s law to enhance fusion, and protects fusion zones from stress.