RADIAL EXPANSION MECHANISM FOR FIXING CRUCIATE LIGAMENT PLASTY TO BONE

摘要

Said mechanism is composed of a cylindrical part (1) having three different sections with an internal longitudinal co-axial cavity with a thread in the lower section. The other two sections are provided with four uniformly-separated longitudinal grooves which cut through the cylindrical wall completely. Each groove houses a part (2) having an I-shaped section with curved flanges and of different sizes and a small bevel is disposed in the lower section of the core. The outside of the upper section of the cylindrical part (1) is threaded so that an acorn-shaped cover (3) can be screwed on. A threaded cylindrical solid bolt (4), which is provided with a hexagonal shape inside the head and a relieved tip, advances inside part (1), expands parts (2) radially and locks and fixes the plasty against the bone wall without damaging the latter.