NEW YORK CITY, NY, UNITED STATES, September 23, 2026 /EINPresswire.com/ — SIGNUS USA announced the successful completion of the first implantation in the United States of the COSY Cervicothoracic-Occipital Rod-Screw Spine Implant System performed by Dr. Sebastian Koga, Chief of Neurosurgery, Berkshire Health Systems, Massachusetts. This procedure marks the U.S. debut of the SIGNUS COSY system and bolsters the introduction of SIGNUS USA, a new U.S.-based company bringing advanced German spine technology and state-of-the-art engineering to the American spine community.
SIGNUS USA® Celebrates Successful American Debut Showcasing Flagship German Spine Technology
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SIGNUS USACOSYimplantationfirstCervicothoracic-Occipital Rod-Screw Spine Implant Systemposterior occipito-cervico-thoracic
The COSY System is a modern, modular posterior occipito-cervico-thoracic (OCT) fixation platform designed to support constructs from the occiput to the upper thoracic spine within a single system – including the cervicothoracic junction through dedicated transition rods.
A key strength of COSY is its freedom of anchor selection. Polyaxial, cervical pedicle, smooth-shank, and angled screws (Ø 3.5–4.5 mm) allow surgeons to combine lateral mass, pedicle, C2 pars, and translaminar trajectories within a single construct, adapting fixation to the individual anatomy and surgical requirements. Low-profile, cannulated screw heads with up to 70° of angulation support K-wire-verified trajectory control and facilitate navigated and tissue-preserving techniques. For complex anatomy and intraoperative flexibility, the system is complemented by occipital plates and rods, cross and offset connectors, as well as atlas hook options, providing a broad range of construct possibilities within one modular platform.
When a construct needs to extend further caudally, COSY can be seamlessly combined with DIPLOMAT®, SIGNUS’ modular posterior thoracolumbar fixation system. DIPLOMAT has been established in the U.S. market for more than a decade and has continuously evolved through product enhancements addressing specific market and surgical needs.
“We are pleased to offer our patients access to new, evidence-driven options,” said Dr. Sebastian Koga, who led the first U.S. COSY implantation. “The COSY system’s design and instrumentation support a streamlined, tissue-preserving approach. Early clinical outcomes for this first case are encouraging, and I look forward to evaluating longer-term patient benefit as we integrate this technology into our practice.”
For more information about SIGNUS USA and its products, visit www.signus.com/us.
Erika Strecker
SIGNUS USA
+1 949-395-5608
e.strecker@signus.com
Author
TH
TJ Halvorson
The De Angelis Group | Orthopedics This Week | MSK Innovations
Why This Matters
Two Perspectives
MBA Lens: Economic and industry impact
SIGNUS USA successfully launched its COSY Cervicothoracic-Occipital Rod-Screw Spine Implant System in the U.S. market with the first implantation. This strategic move introduces advanced German spine technology, aiming to capture market share in the occipito-cervico-thoracic fixation segment. The modular system's design and compatibility with the established DIPLOMAT system position SIGNUS USA for competitive growth and broader adoption among spine surgeons.
- SIGNUS USA's debut with the COSY system marks a strategic entry into the U.S. spine market, leveraging established German technology.
- The modular COSY system, compatible with the DIPLOMAT platform, aims to enhance market penetration and surgeon adoption in OCT fixation.
PhD Lens: Clinical and outcomes impact
The COSY Cervicothoracic-Occipital Rod-Screw Spine Implant System is a modular posterior OCT fixation platform designed for constructs from the occiput to the upper thoracic spine. Its key features include diverse anchor selection (polyaxial, pedicle, smooth-shank, angled screws) and low-profile, cannulated screw heads supporting K-wire-verified trajectory control and tissue-preserving techniques. Initial clinical outcomes from the first U.S. implantation are reported as encouraging.
- The COSY system offers a modular OCT fixation platform with versatile anchor options and cannulated screws for precise trajectory control.
- Clinical evidence is currently limited to encouraging early outcomes from a single U.S. implantation, requiring further long-term evaluation.
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Discussion
This is a fascinating development. In my practice we've seen similar outcomes with the revised protocol. The key differentiator seems to be patient selection criteria. Has anyone else noticed the correlation with BMI thresholds?
Great point. I'd push back slightly on the conclusion, the sample size in the cited study is too small to draw population-level inferences. That said, the directional signal is compelling and worth a larger RCT.
We implemented a similar approach last year. Early results are promising but we're still gathering 12-month follow-up data. Happy to share our protocol if anyone is interested.
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