Abstract: A bone plate assembly is provided for stabilizing a bone fracture. The bone plate assembly includes a bone plate, a first fastener, a second fastener, and an accessory element. The bone plate has a bone contacting, lower surface and an opposite upper surface, and a plurality of screw extending through the bone plate from the upper surface to the lower surface. At least one of the screw holes, a first fastener extends through the bone plate and into an underlying bone or bone fragment. Further, at the same screw hole, a second fastener is received to couple the accessory element to the upper surface of the bone plate to stabilize the accessory element on the bone plate. In at least an embodiment, the accessory element extending over a perimeter of the bone plate and into contact with the bone.

Abstract: A locking element is configured to be used with a polyaxial bone anchor, and is substantially cylindrical with a bottom side facing a head of the bone anchor, a top side opposite to the bottom side, and a surface portion with an external thread. The locking element has a first recess at the bottom side for accommodating at least a portion of the head, and a second recess at the top side for engagement with a driver. The second recess is located outside the center of the top side. The head has a portion with a largest diameter, and a first level L1 is defined by the highest point of a circle with the largest diameter drawn around the head, and a second level L2 is defined by the bottom of the second recess, L2 being at a level not higher than L1.

Abstract: A bone plate assembly is provided including a plate member with a top side (1a) and a bottom side (1b), at least one hole (2) extending from the top side (1a) to the bottom side (1b), an insert (3) arranged in the hole, the insert having a through hole (31), a guide member (4) removably arranged in the through hole of the insert, the guide member having a guide channel (40) and an outer surface portion (41) which engages an inner wall portion (32) of the through hole (31) to allow a pivoting movement of the guide member within the insert.