Fig. 3From: Evaluation of an occipito-cervico fusion with a new implant design: a biomechanical studyWith a drill, the diameter of which is 3.5 mm, three through-holes are made in the occiput orthogonally to the top of the plate (a); each drill hole is then provided with a thread with the thread cutter (b); the bores are concentric to the bores of the implant (c); artificial occiput with through-holes along the internal occipital crest (d)Back to article page