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An occipital bun, also called an occipital spur, occipital knob, chignon hook or inion hook, is a prominent bulge or projection of the occipital bone at the back of the skull. It is important in scientific descriptions of classic Neanderthal crania. [ 1 ]
It is characterized by a deficiency in biliary copper excretion that causes deformations in the skeleton.These include projections on the back of the skull (parasagittal bone exostoses arising from the occipital bone—the so-called "occipital horns") as well as deformities of the elbow, radial head dislocation, hammer-shaped lateral ends of the clavicles, and abnormalities of the hips and ...
The inion is the most prominent projection of the protuberance which is located at the posterioinferior (rear lower) part of the human skull. The nuchal ligament and trapezius muscle attach to it. The inion (ἰνίον, iníon, Greek for the occipital bone) is used as a landmark in the 10-20 system in electroencephalography (EEG) recording
The occipital bone overlies the occipital lobes of the cerebrum. At the base of the skull in the occipital bone, there is a large oval opening called the foramen magnum, which allows the passage of the spinal cord. Like the other cranial bones, it is classed as a flat bone. Due to its many attachments and features, the occipital bone is ...
Skull defects should be closed in order to protect the brain. The occipital and temporal regions bear the most pressure while sleeping and therefore need to be reconstructed. Frontal bone defects cause a contour defect; therefore, aesthetic considerations are often taken into account to reconstruct this area.
Plagiocephaly, also known as flat head syndrome, [1] [2] is a condition characterized by an asymmetrical distortion (flattening of one side) of the skull.A mild and widespread form is characterized by a flat spot on the back or one side of the head caused by remaining in a supine position for prolonged periods.
Approximately, 5% of the UK or USA population present with dentofacial deformities requiring Orthognathic surgery, jaw surgery, and Orthodontics, brace therapy, as a part of their definitive treatment. [3] [4] [5]
Cranioschisis (Greek: κρανιον kranion, "skull", and σχίσις schisis, "split") is a skull-related neural tube defect. The skull does not close all the way in this deformity (especially at the occipital region). As a result, the amniotic fluid enters the brain, leading to eventual brain degeneration and anencephaly. [1]