Screw connection for supporting and stabilizing a posterior pelvic ring fracture or for stabilizing and stiffening the sacrum and iliac joint

摘要

Screw connection for supporting and stabilizing a posterior pelvic ring fracture or for stabilizing and stiffening the sacrum and iliac joint with either a threaded rod (14) in connection with threaded nuts (16) or a screw (7) in connection with the sacrum, a washer (1) between the iliac bone and the threaded nut (16) or screw head (8), wherein - the side (5) of the disc (1) facing the iliac and resting on the iliac has at least one step (6) and is formed at an angle opposite the side (2) opposite the iliac - The disc (1) has an opening (4) for the passage of a region of the threaded rod (14) or the screw (7), - The opening (4) in the disc (1) is widened conically in the direction of the iliac bone and - The disc (1) has at least one fastening means (3) for positioning the disc (1), and a means (15) for centering the disc (1) at least in some areas in the widened opening (4) of the disc (1).