The Ortho Solutions cannulated screw system offer surgeons a range of partially threaded cannulated screws from 4.0mm to 9.0mm in diameter, and lengths up to 120mm. Diameters Available: 4.0mm 5.0mm 6.5mm 8.0mm 9.0mm The cannulated screw systems are suitable for minimally invasive percutaneous surgery, multiple trauma applications and with our unique 18mm thread only available for 6.5 & 8.0mm cannulated screw, are particularly useful for ankle and subtalar joint arthrodesis. The Ortho Solutions cannulated screw system has the following features: Low profile screw head Titanium alloy material Reverse cutting flutes for easy screw removal Self-drilling and self-tapping design