The 3.5 mm Locking Attachment Plate is an alternative to cerclage cables.  The plate is attached to existing Synthes locking compression plates (LCP) using a connecting screw, to augment stabilization of fractures.

The arms on each side of the plate offer the possibility of bypassing the prosthesis stem with 3.5 mm locking screws (or 3.5 mm cortex screws).  The locking capability is important for a fixed-angle construct in periprosthetic fractures and fractures in the presence of intramedullary implants, particularly in osteopenic bone where screw purchase is compromised.  These screws do not rely on plate-to-bone compression to resist patient load, but function similarly to multiple, small, angled blade plates.