Femoral neck metal track sliding support lag screw

Abstract

Disclosed is a femoral neck sliding support lag screw system. An intramedullary main nail is disposed in a femoral trochanter region, and combined locking screws are inclinedly interlocked with the main nail to form an angularly stable structure. Each combined locking screw includes a sliding compression lag locking screw and a non-sliding support locking screw. A femoral neck fracture is fixed by two sliding compression lag locking screws, each supported at a middle-to-lower portion by the non-sliding support locking screw. The structure increases lag screw strength, reduces vertical toggle, and eliminates jamming after screw shaft lifting, improving sliding back-out capability and avoiding a Z-effect. A support platform and slope restrain displacement or deflection of the sliding compression lag locking screw, forming an angularly stable sliding track to achieve transverse stability and longitudinal compression.

Dependencies are inferred from the claim text.