Cortical Self-tapping SS Screws - Hexagonal Head (4.5mm/5.5mm)
Description
The 4.5mm standard human cortical screw is suitable for very large dogs and equines. Because it is a human product made in large numbers, 4.5mm screws are relatively inexpensive. Drill data: Pilot Drill 3.2mm Clearance Drill 4.5mm
The 5.5mm Cortical Screw is suitable for equines. Nearly twice as strong as 4.5mm Cortical Screws. Use with 4.5mm plates. Drill data: Pilot Drill 4.0mm, Clearance Drill 5.5mm
Use of Self Tapping Screws can save considerable time and trauma. Reducing surgery time will reduce morbidity. Pull out strength is not affected provided the self tapping flutes lie outside of the cortex. Self Tapping Screws are less effective in dense cortical bone. e.g. calcaneus. It is advised that an appropriate tap be available should the need arise.