The Proximal Femoral Antirotation Nail – II (PFNA-II) is a modern intramedullary fixation system specifically designed for the treatment of unstable fractures in the proximal femur, including intertrochanteric and subtrochanteric fractures. An evolution of earlier PFN systems, the PFNA-II features a helical blade instead of a traditional lag screw, providing enhanced bone compaction, rotational stability, and purchase in osteoporotic bone.

The nail is inserted through the greater trochanter and follows the natural curvature of the femur, making it suitable for minimally invasive surgery. The helical blade design prevents rotation and collapse of the femoral head fragment, especially useful in elderly patients with poor bone quality. Available in multiple lengths, diameters, and caput-collum-diaphyseal (CCD) angles, the PFNA-II system offers optimized fixation with options for distal locking for added axial and rotational stability.