| 摘要 |
<p>The invention relates to a cervical vertebra plate (10) for osteosynthesis, comprising two receiving openings for the screw heads (18) of bone screws (1 6) in order to secure the cervical vertebra plate to two cervical vertebrae. Th e receiving openings comprise grooves (22) in the distal region on the periphe ry thereof and the depth of said grooves increases from a proximal to a distal end. The invention also relates to a bone screw (18) comprising a screw head (16) and a screw shank. The screw head comprises grooves (34) on the outer periphery thereof and the depth of the grooves varies along the length there of.</p> |
