Symmetry Disc Features Self-adjusting Mobile Bearing Technology
The Symmetry Disc top plate moves over the plastic insert. The plastic insert slides across and twists on the bottom plate. This feature is designed to allow the disc to self-adjust and move with the spine, which is intended to facilitate motion similar to the natural cervical spine.
Symmetry Disc Provides a Bone Sparing Technology
There are no invasive keels or screws required for Symmetry Disc placement. No bone chiseling eliminates operative steps and preserves the vertebrae for a stable surface ideal for one or two-level implantation.
Symmetry Disc Materials There are no invasive keels or screws required for Symmetry Disc placement
The Symmetry Disc has three parts: two metal plates and a plastic insert in the middle. The plates are made of a mix of metals commonly used in spine surgery (cobalt, chromium, and molybdenum).
The plates have teeth on the top and bottom that help hold the plates to the vertebrae. The teeth are pressed into the bone with no bone cut out, which makes the Symmetry Disc design and technique bone sparing. The outside of the metal plates are sprayed with a coating (hydroxyapatite). This coating helps the vertebrae to grow and attach to the metal plates for long term stability. The plastic insert is made from polyethylene. The insert is flat on the bottom and round on the top. The insert is made to move as you move your neck.
There are no invasive keels or screws required for Symmetry Disc placement
Symmetry Disc Provides Ease of Insertion
Symmetry Disc eliminates operative steps with no bone chiseling required to cut a path for keels or screws. After disc preparation, Symmetry Disc can be inserted in one step. Symmetry Disc comes preassembled on a PEEK cartridge. This simplifies implantation and allows a radiolucent view of the implant for optimal positioning.