Cannulated shaft accepts guide wires of 1.6mm with threaded Trocar tip
Hemispherical head of the screws ensures optimal annular contact with washers and plates when screws are angled
Low-profile head reduces possibility of soft tissue irritation
Thread profile designed to provide pullout resistance and insertion efficiency similar to those of the standard 4.5mm cortex screw
(thread length = 1/3 screw length)
The partially threaded screws can be used to "lag" one bone fragment to another where the bone fragment is captured by the threads of the screw and pulled toward the fragment piece closest to the headed end of the screw.
Length ranges from 20mm-80mm with a diameter of 4.5mm.