| Ossification patterns of the atlas vertebra. | |
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MedLine Citation:
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PMID: 22021519 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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OBJECTIVE: The objective of this study was to characterize ossification patterns of the C1 (atlas) vertebra in children, to better differentiate normal variants from traumatic injury. MATERIALS AND METHODS: A retrospective review of all sinus and temporal bone CT examinations was performed for the period of 2002-2009. Patients 96 months old or younger for whom C1 level was at least partially imaged were included. Patients with a history of trauma or genetic disorder-associated spinal abnormalities were excluded. RESULTS: A total of 1270 CT examinations were reviewed. The anterior arch of C1 was completely imaged in 841 patients (66%), and the posterior arch was completely imaged in 378 patients (30%). Multiple anterior arch ossification centers were observed in 179 of 841 patients (21%), and posterior arch variants were present in nine of 378 patients (2%). At least partial ossification of the anterior arch was seen in 113 of 147 children (77%) younger than 25 months, whereas only 14 of the remaining 694 children (2%) older than 24 months failed to show any ossification. Incomplete ossification of the anterior arch was noted in 47 of 103 patients (46%) in the 85-96-month-old category. The posterior arches were at least partially ossified in all children. Incomplete fusion of the posterior synchondrosis was seen in 17 of 108 patients (16%) older than 60 months. CONCLUSION: C1 ossification patterns and timing of synchondrosis fusion are variable. Knowledge of these patterns is important to better differentiate a normal variant from traumatic injury. |
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Authors:
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Joseph J Junewick; Matthew S Chin; Indu Rekha Meesa; Saima Ghori; S Jemar Boynton; Charles R Luttenton |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: AJR. American journal of roentgenology Volume: 197 ISSN: 1546-3141 ISO Abbreviation: AJR Am J Roentgenol Publication Date: 2011 Nov |
Date Detail:
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Created Date: 2011-10-24 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7708173 Medline TA: AJR Am J Roentgenol Country: United States |
Other Details:
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Languages: eng Pagination: 1229-34 Citation Subset: AIM; IM |
Affiliation:
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Department of Radiology, Helen DeVos Children's Hospital/Spectrum Health, Grand Rapids, MI. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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