Complex Spine Posterior Fixation System
The Coligne complex spine system combines polyaxial pedicle screws, rod-to-rod domino connectors, and long-segment OstaPek® and titanium rods.
Rationale
The system provides the structural reliability and biomechanical versatility that complex spine procedures demand:
- Reliable segmental fixation through a versatile screw portfolio
- Construct continuity and adaptability through a comprehensive connector system
- Biomechanically appropriate load distribution through ostaPek® long rods in preformed curvatures with standard or progressive rigidity.
OstaPek® Enabling Technology
ostaPek® is a proprietary long carbon fiber reinforced polymer composite (67% carbon fiber / 33% PEKEKK matrix) which properties influence fusion quality, adjacent segment loading, and long-term construct integrity in complex and long-segment spine surgery.
Why OstaPek® matters in complex spine
- Bone-alike — Rigidity closer to natural bone reduces stress shielding and promotes physiological load transfer, stimulating remodeling as per Wolff’s Law.
- Physiological-like architecture — Its internal fiber orientation replicates the trabecular structure of bone, thus responding differently depending on the direction of load, coherently with the host tissue.
- Preformed SL curvature: ostaPek® long rods are available with a pre-shaped sagittal profile supporting sagittal alignment goals.
- Superior fatigue resistance: combining the strength of metal with the advantages of a polymer matrix.
- Intrinsic osteophilicity — No surface coating required, supporting osseointegration and fusion without additional treatment.
- Full radiolucency — completely radiotransparent on X-ray, CT, and MRI, enabling artifact-free postoperative assessment of fusion.