odontoid process


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odontoid process

n.
A small, toothlike, upward projection from the second vertebra of the neck around which the first vertebra rotates.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

odontoid process

n
(Anatomy) anatomy the toothlike upward projection at the back of the second vertebra of the neck
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.odontoid process - a toothlike process at the back of 2nd vertebra of the neckodontoid process - a toothlike process at the back of 2nd vertebra of the neck
appendage, outgrowth, process - a natural prolongation or projection from a part of an organism either animal or plant; "a bony process"
axis vertebra, axis - the 2nd cervical vertebra; serves as a pivot for turning the head
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Axial skeleton shows ovoid vertebral bodies, severe platyspondyly, hypoplasia of odontoid process (which results in atlantoaxial instability that can cause cervical myelopathy), progressive kyphoscoliosis (short trunk) involving thoracic and lumbar spine, narrowing of disk spaces (resulting in short trunk), broad iliac bases, deficient ossification of pubis and flat acetabular roof.
Deadly falls: operative versus nonoperative management of type II odontoid process fracture in octogenarians.
Morphometric analysis of the C2 body and the odontoid process. Turk.
The historical background of Os odontoideum revealed that the first case has been illustrated as disentanglement of the odontoid process in 1863.
Os odontoideum is a rare craniocervical junction anomaly with a smooth cortical edge, located behind the anterior arc of the atlas and separated from the main body of the odontoid process (1).
(i) The craniocervical angle which is the inner angle formed by the intersection of McGregor's plane (line passing through the occiput and nasal spine) and odontoid plane (line passing through the inferior-anterior point of the odontoid process and its superior apex) with a normal value of 101 [+ or -] 5.
These images showed a reduction of the left articular condyle-glenoid fossae space width, with no evidence of condyle neck fracture, and a right deviation of first (odontoid process), second, and third cervical vertebrae, regarding the skull base, caused probably by the chin injury (Figure 2).
A plain radiograph and CT image after the surgery showed improvement of AARF, but the odontoid process appeared osteolytic (Figure 2(c)).
The exam revealed a smooth and well-corticated bone ossicle measuring 14 mm and located superiorly to the odontoid process corresponding to an os odontoideum (Figures 1(a)-1(c)).
Wang and collaborators evaluate using 3 computer tomography (CT) sets before the treatment and at the 15th and 25th fraction during the treatment, distances between the lateral/medial aspects of parotid glands (PG) and midline at the level of odontoid process. GTV volume loss in this study led to the most significant change in position of the parotid glands during the first 3 weeks of treatment than between 3 and 5 weeks of treatment [11].