Intervertebral wedge fixing system comprises pedicular screws, and bar with thrust plate to support wedge

摘要

The fixing system, especially for an intervertebral wedge (10) in the sacral region, consists of two pedicular screws (1) linked by a bar (3) with a central thrust plate (5) which presses against the sacrum and supports the wedge. The bar and thrust plate are made from a lightweight biocompatible material such as titanium, and the rear part of the thrust plate has a notch for the passage of a ligament. The screws have expanding shanks, and the bar ends are fixed in the screw heads (2) by plugs (4).