The Latermass Poly Screw is a small-diameter screw, likely part of a smaller or modular spinal fixation system, indicated by its 3.5mm and 4.0mm diameters and short size range of 10mm to 30mm. The “Poly” designation indicates a polyaxial (multi-axial) head, allowing the screw head to swivel relative to the shaft. This flexibility is critical for connecting small rods efficiently, especially in procedures involving the cervical or upper thoracic spine, or for modular lateral mass fixation.
Key features include:
-
Small Diameter: Available in 3.5mm and 4.0mm diameters.
-
Polyaxial (Swiveling Head): Simplifies rod placement and connection by allowing the head to angle relative to the shaft.
-
Short Size Range: Sizes run from 10mm to 30mm (with 2mm variation), suggesting use in vertebrae with limited bone depth.
-
Primary Use: Likely intended for cervical or upper thoracic spine fixation, or specific modular systems.
