The Catamaran® SI Joint Fusion System offers a novel, less invasive Inferior-Posterior approach to the SI joint using a single, robust titanium implant.
The System features the Catamaran® Fixation Device, which passes through both the axial and sagittal planes of the ilium and sacrum, transfixing the SI joint along its longitudinal axis.
A Better Option for SI Joint Fusion
![si joint 3d view](assets/images/better-option-favorable-entry.png)
Favorable Entry
Direct access to the SI joint provides optimal entry point to facilitate arthrodesis
![si joint 3d view](assets/images/better-option-inferior-posterior.png)
Inferior-Posterior Approach
Trajectory is angled away from critical neural and vascular structures
![si joint implant placement](assets/images/better-option-optimized-placement.png)
Optimized Placement
Designed for maximum fixation in the dense cortical bone of the SI joint, inferior to the dorsal recess
![si joint implant](assets/images/better-option-implant.png)
Single, Robust
Titanium Implant
A single implant that transfixes the SI joint
The Catamaran SI Joint Fusion System is intended for sacroiliac joint fusion for conditions including sacroiliac joint disruptions and degenerative sacroiliitis
Utilizing a 2D fluoroimaging sequence, the Catamaran Fixation Device is implanted with one pontoon fixated into the ilium and the other into the sacrum, transfixing the SI joint along its longitudinal axis.
![si joint 3d view](assets/images/modified-outlet-view-illustration.png)
![si joint implant modified outlet view](assets/images/modified-outlet-view-xray.png)
MODIFIED OUTLET VIEW
Implant Trajectory
![si joint implant](assets/images/modified-inlet-view-illustration.png)
![si joint implant modified inlet view](assets/images/modified-inlet-view-xray.png)
MODIFIED INLET VIEW
Implant Entry
![si joint implant](assets/images/lateral-view-illustration.png)
![si joint implant lateral view](assets/images/lateral-view-xray.png)
LATERAL
VIEW
Implant Depth
Catamaran SI Joint Fixation
Device:
Design & Specifications
Joined by a patented transfixing osteotome bridge, the implant consists of two hollow fenestrated pontoons with an open framework designed for packing with autologous bone to facilitate bony in-growth through the SI joint.
The transfixing osteotome is designed to disrupt the articular portion of the joint to help facilitate a fusion response.
Catamaran Biomechanical Characterization and Testing
In mechanical testing, the Catamaran Fixation Device performed favorably as a reliable sacroiliac joint fixation/stabilization system that greatly exceeded the biomechanical thresholds of the sacroiliac joint.
White Paper PDF: Performance Integrity of the Catamaran SI Joint Fixation Device in a Novel, Inferior-Posterior Approach for Sacroiliac Joint Fusion
If you would prefer a printed copy of any of these documents sent to you, please contact Tenon Customer Service at 1-844-211-2540.
A Single Center Experience with the
Catamaran SI Joint Fusion System
Early clinical experience has shown that the Catamaran® SI Joint Fixation Device via an inferior-posterior approach has the potential to deliver significant & sustained reduction in SI joint pain, as well as:
![significant reduction in si joint pain line graph](assets/images/vas-pain-scores-graph.png)
White Paper PDF: SACROILIAC JOINT FUSION: Improving Surgical Outcomes Through an Inferior-Posterior Approach with the Tenon Medical Catamaran™ SI Joint Fusion System
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