Osteosynthesis device for stabilizing and limiting excessive inter-fragment mobility, has threads with ends sectioned such that difference between side and core diameters is of specific percent of difference between side and base diameter

摘要

The device (1) has an anchor rod (4), and a support (2) provided with an orifice (3) with a core diameter (Dns). Threaded parts (5, 12) of the orifice and rod have nominal and side diameters (Dn, Df) and respective threads (5', 12'). The part (12) has outer and base diameters (De, Dff). Projecting ends of the threads are sectioned such that the difference between the diameters (De, Df) is between 5 and 70 percent of the difference between the diameters (Dn, Df), and the difference between the diameters (Df, Dns) is between 5 and 70 percent of the difference between the diameters (Df, Dff).