In front of the foramen a thick short rod like piece of bone. Lower aspect shows a a pharyngeal tubercle for the attachment of the mid point of the posterior wall of the pharynx.
Set the drill guide length to 20 mm and drill into the posterior aspect of the occipital condyle.
Basi occiput. The surface of this wedge shaped bone allows attachments for parts of the pharynx neck muscles and the anterior atlanto occipital membrane a thin sheet of tissue that connects the front of the first cervical vertebra to the front of the foramen magnum. The basilar part of the occipital bone also basioccipital extends forward and upward from the foramen magnum and presents in front an area more or less quadrilateral in outline. The tip of the occipital condyle screw should not be more anterior than the tip of the dens.
Developmental progression of the closure of the spheno. The occipital bone ˌ ɒ k ˈ s ɪ p ɪ t əl is a cranial dermal bone and the main bone of the occiput back and lower part of the skull it is trapezoidal in shape and curved on itself like a shallow dish. B markings behind and on each side of the tubercle for insertion of the anterior recti.
The basisphenoid bs portion of the clivus superiorly and anteriorly is located within the middle cranial fossa whereas the basi occiput bo portion of the clivus is a portion of the occipital bone within the posterior cranial fossa. The occipital lobe is the part of the human brain responsible for interpreting information from the eyes and turning it into the world as a person sees it. The much smaller basilar section of the occipital bone or the basi occiput lies in front of the foramen magnum.
In the young skull this area is rough and uneven and is joined to the body of the sphenoid by a plate of cartilage. With the drill in place take a lateral x ray to assess the proper length of the screw. Occiput is a noun referring to the back of the head it is not a synonym for the occipital bone.
The occipital bone overlies the occipital lobes of the cerebrum at the base of skull in the occipital bone there is a large oval opening called the foramen magnum which allows the. The occipital bone is also known as c0 because it joins the skull to the first cervical vertebra or c1 forming the atlanto occipital joint. The spheno occipital synchondrosis also known as the basiocciput synchondrosis is the synchondrosis between the basisphenoid and basiocciput bones which together when joined form the clivus when fused the synchondrosis is often called the spheno occipital suture this is a misnomer as anatomically it is not a suture.
The occipital bone is composed of four parts. Note the sclerotic fused sphenooccipital synchondrosis fissure thin black arrow.