odontoid ossicle of the second cervical vertebra

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by
s.n. , [S.l
Axis (Vert
Other titlesAnnals of surgery.
Statementby T. Wingate Todd and Joseph D"Errico.
ContributionsD"Errico, Joseph.
The Physical Object
Paginationp. 20-31 :
ID Numbers
Open LibraryOL18547909M

The odontoid ossicle of the second cervical vertebra [T. Wingate Todd] on *FREE* shipping on qualifying : T. Wingate Todd. The odontoid process provides a pivot point — called an axis of motion — around which the skull and the first cervical vertebra (the atlas) rotate, twist and/or turn (these are really all the same thing.) So when it comes to turning your head so you can see behind you, or parallel park, you can, to a great extent, thank your dens for that.

In anatomy, the second cervical vertebra (C2) of the spine is named the axis (from Latin axis, "axle") or epistropheus. By the atlanto-axial joint, it forms the pivot upon which the first cervical vertebra (the atlas), which carries the head, rotates. The most distinctive characteristic of this bone is the strong odontoid process known as the dens, which rises perpendicularly from the upper FMA: axis [ak´sis] (pl.

ax´es) 1. a line through a center of a body, or about which a structure revolves. the second cervical vertebra. adj., adj ax´ial. the position of the cylindrical part of a lens, used for correcting astigmatism; the range of values is from 0° to °.

Description odontoid ossicle of the second cervical vertebra FB2

celiac axis celiac trunk. dorsoventral axis one passing from the posterior to. The accessory ossicle of the anterior arch of the atlas is a normal variant and is best appreciated on a lateral cervical/sagittal study.

It is observed as a circular and corticated osseous density that articulates with the inferior aspect of the anterior arch of the atlas. It is not associated with patient symptomatology. Odontoid Process Fracture. Odontoid process fractures are the most common fracture of the 2nd cervical vertebrae (Pratt et al., ) and result from sudden hyperflexion (producing anterior displacement of the fragment with the atlas) or hyperextension (producing posterior displacement of both the dens and the atlas) (Wedel and Gallowayp.

The odontoid process, in position between the anterior ring of the atlas ventrally and the transverse ligament dorsally, is the main structure preventing dislocation of C1 on elopment of the odontoid process or the transverse ligament results in congenital atlantoaxial dislocation and cervical myelopathy.

Aplasia of the odontoid process can occur alone or as part of Morquio syndrome. The Second cervical vertebrae has a large toothlike process projecting from it which fits into the arh of C1, the process is called what the dens or odontoid Vertebral Foramen.

The vertebra prominens, or C7, has a distinctive long and prominent spinous process, which is palpable from the skin mes, the seventh cervical vertebra is associated with an abnormal extra rib, known as a cervical rib, which develops from the anterior root of the transverse ribs are usually small, but may occasionally compress blood vessels (such as the subclavian FMA:Other articles where Cervical vertebra is discussed: Caudata: Bones and cartilage: There is one cervical vertebra with a characteristic projection called the odontoid process and two large facets for articulation with the skull.

There may be from 11 (Ambystoma talpoideum) to 60 (Amphiuma) dorsal, or trunk, vertebrae, all but the last 1 or 2 usually bearing ribs. [Small/absent odontoid] The first cervical vertebra (atlas) and the odontoid process, or dens, of the second cervical vertebra (axis) originate from the first cervical sclerotome mesenchyme, whereas the body, lateral masses, and posterior arch of the axis arise from the second cervical sclerotome (Currarino ).

Vertebra, second cervical: The second cervical vertebra is called the axis. It is so-named because the uppermost cervical vertebra (called the atlas) rotates about the odontoid process of the second cervical vertebra.

The joint between the axis and atlas is a pivot type of joint. It allows the head turn. The Latin word "axis" means axle or pole. Start studying cervical and thoracic spine. Learn vocabulary, terms, and more with flashcards, games, and other study tools.

Search. Or odontoid process For this cervical the most distintive feature of the second cervical vertebra is the clinical important dens or odontoid process.

Dens. Oppenheimer ossicles are accessory ossicles associated with the facet joints found in ~4% (range %) 1 of lumbar spines. Oppenheimer ossicles are thought to arise as a result of non-union of a secondary ossification center of the articular process.

Second Cervical Vertebra. —The second cervical vertebra (Fig. 87 and 88) is named the epistropheus or axis because it forms the pivot upon which the first vertebra, carrying the head, rotates. The most distinctive characteristic of this bone is the strong odontoid process which rises perpendicularly from the upper surface of the body.

Duplicated Odontoid Process: (second cervical) vertebra is of special interest owing to its particular anatomy, biomechanics, and position in the spine. This book covers all aspects of the. Define odontoid vertebra.

odontoid vertebra synonyms, odontoid vertebra pronunciation, odontoid vertebra translation, English dictionary definition of odontoid vertebra.

axes 1. C2 (cervical vertebra): C2 is the symbol for the second cervical vertebra, which is also called the axis. It is so-named because the uppermost cervical vertebra (called the atlas) rotates about the odontoid process of the second cervical vertebra.

The joint between the axis and atlas is a pivot type of joint. It allows the head turn. The dens or odontoid process is on the A) first cervical vertebra. B) second cervical vertebra. C) first thoracic vertebra.

D) second lumbar vertebra.

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E) coccyx. Answer: b Level: 1 Transverse foramina are found in _____ vertebrae. Articular facets on the transverse processes are. Anatomy cervical vertebra 1.

Details odontoid ossicle of the second cervical vertebra FB2

ATYPICAL VERTEBRAEAtypical vertebrae (figure ) are those vertebraewhose structure is highlymodified by function and position. They consist of thefirst cervical vertebra (C-1) oratlas, the second cervical vertebra (C-2).

Request PDF | The Axis Vertebra | The axis (second cervical) vertebra is of special interest owing to its particular anatomy, biomechanics, and position in the spine. Despite this, | Find, read Author: Dimitrios Korres.

cervical vertebra, axis, fusion, lamina, pedicle, block vertebra. Introduction. The distinguishing feature of the 2nd cervical vertebra (axis) is presence of odontoid process (dens) which articulates with anterior arch of atlas, and acts as a pivot around which atlas with skull rotates [1].Cited by: 2.

vertebra [ver´tĕ-brah] (L.) any of the separate segments comprising the spine (vertebral column). The vertebrae support the body and provide the protective bony corridor (the spinal or vertebral canal) through which the spinal cord passes. The 33 bones that make up the spine differ considerably in size and structure according to location.

There are. The Axis is the second cervical vertebra or C2. It is a blunt tooth–like process that projects upward. It is also referred to as the ‘dens’ (Latin for ‘tooth’) or odontoid process.

The dens provides a type of pivot and collar allowing the head and atlas to rotate around the dens. Imaging of the Cervical Spine > Technique > AP and Odontoid Views. AP and Odontoid Views.

The complete radiographic examination includes AP and open-mouth views. If there are no obvious fractures or dislocations on the lateral view and the patient's condition permits, then proceed with the AP and the open-mouth views.

Fig. Congenital block vertebrae. Observe ankylosis of the second and third cervical vertebrae, involving both the vertebral bodies and posterior elements. The intervertebral disc is atrophic and contains minimal calcification.

Note also fusion of the atlas with the skull base. Fig. AXIS • The second cervical vertebra (C2) of the spine is named the axis • The most distinctive characteristic of this bone is the strong odontoid process ("dens") which rises perpendicularly from the upper surface of the body 8.

• Dens provide attachment at its apex to apical ligament& on each side to alar ligament. The second cervical vertebra is the axis.

Its vertebral body is formed by fusion with the vertebral body of the atlas to form the odontoid process (or dens), which is completely separate from the atlas. The laminae of the axis are very well developed and blend into a bifid spinous process.

In-depth description of the anatomy of typical Cervical Vertebra [C3 to C6]. Find second cervical vertebra or axis stock images in HD and millions of other royalty-free stock photos, illustrations and vectors in the Shutterstock collection. Thousands of new. Dens, a tooth-like process on the axis (the second cervical vertebra).From the Latin word for tooth, dens.

An alternative name for the dens is odontoid process (from the Greek odous, tooth, and -oeides, shaped).The term is no longer recognized by the Terminologia Anatomica, but is still firmly entrenched in the anatomical lexicon.

Other words related to dens: dentist, dentate (having a toothed. BACKGROUND CONTEXT: Odontoid fractures account for 10–20% of all cervical fractures.

Despite this frequency, their management remains controversial. High rates of nonunion after nonoperative management have led many authors to advocate anterior screw fixation.

PURPOSE: The purpose of the current study was to analyze a large number of adult second cervical vertebrae, and to. Cervical Vertebrae. There are a total of 7 cervical vertebrae, and with the hyoid bone, they form the skeleton of the neck extending from the base of the skull superiorly, inferiorly till the 1st thoracic vertebra.

The spinal nerves emerge above the corresponding vertebrae – for example, C3 spinal nerve comes off above the C3 vertebra.