Abstract: A plate (1) includes blocking elements (4b, 5, 6) including: at least one slot (5) comprising a first portion opening into the hole (2) and a second portion extending over a section of this hole (2), at a distance from the edge defining this hole (2), this slot (5) thereby isolating a portion of material (6); this portion (6) has a first part (6a) with a radially increased thickness and a second part (6b) having a radially reduced thickness; this part (6b) has a thickness such that the portion (6) may be radially mobile between a withdrawn position and an active position; a pad (4b) engaged in the slot (5), able to be moved in such a way as to bring the portion of material (6) from its withdrawn position to its active position.

Abstract: This plate (1) includes blocking elements (4b, 5, 6) including: at least one slot (5) comprising a first portion opening into the hole (2) and a second portion extending over a section of this hole (2), at a distance from the edge defining this hole (2), this slot (5) thereby isolating a portion of material (6); this portion (6) has a first part (6a) with a radially increased thickness and a second part (6b) having a radially reduced thickness; this part (6b) has a thickness such that the portion (6) may be radially mobile between a withdrawn position and an active position; a sliding nut (4b) engaged in the slot (5), able to be moved in such a way as to bring the portion of material (6) from its withdrawn position to its active position.

Abstract: A vertebral osteosynthesis equipment includes bony anchoring members, such as pedicular screws (1), one or two linking rods (2), intended to be connected to these anchoring members, and connection assemblies (6, 3) of this or these rods (2) to these anchoring members, at least one of these anchoring members (1) being of the “polyaxial” type, i.e. including a connection part (6) articulated with respect to a base portion (5) intended to be attached to the vertebrae. The “polyaxial” anchoring element (1) includes a flexible junction portion (7) connecting the connection part (6) and the base portion (5), this flexible junction portion (7) providing the desirable joint of this connection part (6) with respect to the base portion (5).

Abstract: A device comprises osseous anchoring elements, one or two connecting rods (2) which are connectable to the anchoring elements and fixable to vertebrae by elements thereof and connecting elements (6, 3) of the rod(s) (2) for fixing the rod(s) to the anchoring elements, at least one anchoring element being of a polyaxial type. Each connecting part (6) and each base part (7) includes a transversal passage and a rigid transversal element (11, 24) whose direction is substantially perpendicular to the direction of the passage. The rigid transversal element (11, 24) of the connecting part (6) or of the base part (7) is introducible into the transversal passage of the base part (7) or of the connecting part (6) and vice-versa in such a way that the rigid transversal elements (11, 24) are pivotable in the passages.