POSEIDON®

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POSEIDON®

CervicalPosterior

POSEIDON®

Occipital and Cervical Posterior Fixation System

POSEIDON® is Medyssey's comprehensive posterior fixation system engineered for occipital and cervical stabilization.

  • From Occiput to Cervical
  • Total Posterior Control
Engineering

Designed for the Surgical Workflow

  • 01
    Poly-axial Screw System

    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.

  • 02
    Comprehensive Rod Options

    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.

  • 03
    Wide-Range Occipital Plate Design

    4-hole and 5-hole occipital plate configurations provide versatile midline and parasagittal fixation options to accommodate varying skull morphology and surgical access.

  • 04
    Extensive Connector Portfolio

    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.

  • 05
    Titanium Alloy Construction

    All components are manufactured from medical-grade Titanium Alloy (Ti-6Al-4V), ensuring optimal strength-to-weight ratio, corrosion resistance, and MRI compatibility.

  • 06
    Craniocervical Reconstruction Ready

    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.

Specifications

Precision in Every Dimension

Plate Dimensions
  • Screw Diameter3.5 / 4.0 / 4.5mm
  • Screw TypePoly-axial, Pedicle, Smooth Shank, Lateral Mass
  • Rod Diameter3.5 / 4.5 / 5.5 / 6.0 / 6.35mm
  • Rod Length Range30 – 400mm
  • Occipital Plate4-Hole / 5-Hole
  • Connector Compatibility3.5mm to 3.5 / 4.5 / 5.0 / 5.5 / 6.0 / 6.35mm
  • MaterialTitanium Alloy (Ti-6Al-4V)
  • CoverageOcciput – Cervical Spine
Indications
  • Craniocervical Instability
  • Occipitocervical Fusion
  • Cervical Trauma and Fractures
  • Cervical Deformity Correction
  • Tumors Requiring Posterior Cervical Stabilization
  • Post-operative Instability Following Laminectomy
  • Revision Surgery for Failed Cervical Fixation