CervicalPosterior
Occipital and Cervical Posterior Fixation System
POSEIDON® is Medyssey's comprehensive posterior fixation system engineered for occipital and cervical stabilization.
3.5mm, 4.0mm, and 4.5mm poly-axial screws — including pedicle, smooth shank, and lateral mass variants — provide multi-directional angulation for precise fixation across complex cervical anatomy.
Straight and pre-bent rods ranging from 30mm to 400mm, with dual-rod availability from 3.5mm paired with 4.5 / 5.5 / 6.0 / 6.35mm — enabling construct customization for both standard and long-segment cases.
4-hole and 5-hole occipital plate configurations provide versatile midline and parasagittal fixation options to accommodate varying skull morphology and surgical access.
A broad connector range bridging 3.5mm rods to 3.5 / 4.5 / 5.0 / 5.5 / 6.0 / 6.35mm rods enables seamless integration with existing posterior thoracolumbar systems.
for extended construct builds.
All components are manufactured from medical-grade Titanium Alloy (Ti-6Al-4V), ensuring optimal strength-to-weight ratio, corrosion resistance, and MRI compatibility.
The POSEIDON® system is purpose-built to address the full spectrum of occipitocervical pathology — from trauma and instability
to tumor and deformity correction — within a single unified platform.