Connectors

The new connectors (Fig 2) are designed to accommodate different rod configurations including parallel (side-by-side), axial (end-to-end), and lateral. Several different rod capture mechanisms are available, including top loading, side loading, and closed. The system also offers articulating and multiple centerline offset connectors, providing intraoperative flexibility. The connectors feature an integrated set screw, allowing the surgeon to connect to a rod or a connector holder instrument.

• The TriALTIS™ connectors are compatible with other systems as follows:
• 5.5 mm rods: Expedium 5.5 mm hooks and connectors
• 5.5 and 6.0 mm rods: Expedium 5.5–6.35 mm variable connectors
• Matrix Transconnector
• Symphony

Connector instruments offered within the new system allow efficient insertion and manipulation and also provide counter-torque capability for efficient connector handling. Fig 2 shows the unilateral inserter and the connector holder.

Revision Screws

The TriALTIS™ Spine System includes a specialty revision screw offering, with screw diameters ranging from 7.5–12.0 mm. Using larger diameter screws in revision surgery may decrease the likelihood of postoperative complications such as screw pullout [1] in patients requiring revision surgery to the lumbar spine.

Design features

The large diameter favored angle revision screws (Fig 3) are compatible with both 5.5 mm and 6.0 mm rods and have 46° of motion in the favored angle design. The screws feature a quick catch tip for immediate engagement with bone and ease of insertion into the pedicle [2]. The thread design allows a 6 mm screw advancement with one complete screwdriver turn.

The specialty revision screw shank offering includes:

• Solid Cortical Fix (available in lengths of 30–60 mm)

• Cannulated Fenestrated Cortical Fix screws (available in lengths of 30–60 mm)

• Solid Dual Lead (65–110 mm)

• Solid Partial Thread (65–110 mm)

• Cannulated Partial Thread (65–110 mm)

Instrumentation

The TriALTIS™ System Revision Screw portfolio is offered in combination with dedicated instrumentation. The revision screw offering shares standard features with all TriALTIS™ Screws, enabling consistent instrumentation across the platform.

• TOP NOTCH™ feature
• Tapered head design
• Rocker connection
• T27 drive feature

Indications (US)

The TriALTIS™ Spine System is intended to provide immobilization and stabilization of spinal segments in skeletally mature patients as an adjunct to fusion in the treatment of acute and chronic instabilities or deformities of the thoracic, lumbar and sacral spine.

Full US Indications in IFU – 0902-90-407

Indications (EU)

The TriALTIS™ Spine System is indicated for the following in skeletally mature patients:

• Degenerative spine disease
• Deformities/Instabilities
• Tumors 
• Trauma

Full oUS Indications in IFU – 0902-90-432

References

1. Varghese V, Venkatesh K, Gurunathan SK. Comparison of pullout strength of pedicle screws following revision using larger diameter screws. (2019) Medical Engineering & Physics, 74: 180 –185.


2. DePuy Synthes. TriALTIS™ Evidence Generation Engineering Analysis: Quick Catch and Tapered Self‐Tapping Tip Design. May 9, 2023. Windchill Document No. 501380612 Rev. A