Advanced Spine, Inc.’s VariFix® System for spinal fixation was designed for optimized maximum strength with the pedicle, minimal rod contouring, and increased torsional strength that reduces the need for traverse connecting rods. The VariFix® System is a patented top loading, low profile clamping, rigid hold system utilizing a unique serrated rod support.

The systems implants are color coded for quick component identification and reduced surgery time. A wide variety of sizes and styled of implant components are available to the surgeon allowing a broad range of construct flexibility.

Patented true top loading rod clamping system. Patented serrated Titanium alloy rod. Patented low profile sleeve nut design. Simple color coded system. Angled offsets and incremental saddle and clamp connectors which greatly reduce rod contouring. Variety of spacer heights which reduce rod bending, increase bone graft area for P.L.I.F. and most importantly transfers loads in a beneficial manner. Blunt tip screw with full radius tapered threads varying in size from 5.0mm to 8.5mm. History of successful post lumbar fusions. Simple instrumentation. Low fiddle factor.

Top Loading Rod system developed for anatomic screw placement with minimal rod contouring.	A variety of spacer hiehgts reduce rod bending, increase bone graft area and share in transferring dynamic loads.
Angled, Offset and Incremental saddle and clamp connectors greatly reduce rod contouring.	Blunt tip screws with full radius tapered threads range in sizes of 5.0, 5.8, 6.5, 7.5, 8.5mm diameters.

Torsional & Axial Strength Test

Torsional & Axial Forces: Torsonial and Axial forces can be overwhelming to many fixation systems. These forces generated by the body emphasises the need for a RIGID ROD/CLAMP connection to hepl overcome these potentially devastating forces. In the graphs below, L.R.A. Laboratories, a leading independent mechanical stress testing lab, shows the results of a comparison study of several fixation systems andhow they react to these torsional (rotational) and axial (downward) forces, and the amount of force that is needed to cause substantial slip between the rod/clamp connection.