The 8.0 mm Proximal Femoral Screw is a large-diameter lag screw specifically designed for use in Proximal Femoral Nailing (PFN) systems, which are commonly used to treat intertrochanteric and subtrochanteric fractures of the femur. This screw is made from high-strength titanium alloy or stainless steel and is engineered to provide firm anchorage into the femoral head, delivering excellent axial and rotational stability.

The screw typically features a partially threaded, cannulated design, allowing for guided insertion over a guidewire. Its robust construction ensures load-sharing between the bone and implant, while the threads provide secure purchase in cancellous bone of the femoral head. In dual-screw PFN systems, the 8.0 mm screw functions as the primary load-bearing lag screw, working in combination with a 6.4 mm anti-rotation screw or similar.

This screw is essential for maintaining compression across the fracture site and preventing femoral head collapse during healing.