Os Odontoideum in Children

Hedequist, Daniel; Mo, Andrew Z.

doi:10.5435/jaaos-d-18-00637

Cited by 21 publications

(29 citation statements)

References 41 publications

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“…The etiology of the os odontoideum is controversial, with most studies supporting the theory that the ossification center at the tip of the dens of C2 did not fuse by 12 years of age. 6 Associated hypertrophy of the anterior arch of the atlas, hypoplasia of the posterior arch, and well-corticated margins are main findings to differentiate it from a traumatic origin. Further, if patients present with neck pain or even myelopathy and/or the ossicle is displaced on lateral flexion and extension radiographs, a traumatic origin is most likely.…”

Section: Osseous-mimicking Pathologiesmentioning

confidence: 99%

The Great Mimickers of Spinal Pathology

Farshad‐Amacker

Sutter

2022

Semin Musculoskelet Radiol

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Back pain is one of the leading causes of health costs worldwide, particularly because of the further increased aging population. After clinical examination, spinal imaging is of utmost importance in many patients to reach the correct diagnosis. There are many imaging pitfalls and mimickers of spinal pathology on radiographs, magnetic resonance imaging, and computed tomography. These mimickers may lead to a misdiagnosis or a further imaging work-up if they are not recognized and thus lead to unnecessary examinations and increased health care costs. In this review we present the common mimickers of spinal pathology and describe normal variations when reading imaging studies of the spine.

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Section: Osseous-mimicking Pathologiesmentioning

confidence: 99%

The Great Mimickers of Spinal Pathology

Farshad‐Amacker

Sutter

2022

Semin Musculoskelet Radiol

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“…This subject of Proatlas‐manifestation, the clinical phenomena potentially resulting from it and their treatment is part of modern medicine. Always new findings of both morphological (Tsuang et al, 2011; Spittank et al, 2016) and clinical investigation (Hedequist & Mo, 2020; Menezes & Dlouhy, 2020; Montrisaet & Petcharunpaisan, 2020; Sato et al, 2019) continue to enrich this field of research.…”

Section: Introductionmentioning

confidence: 99%

The Ligamentum condylicum posterius as a precursor structure of the Processus condylicus posterior, another Proatlas‐Manifestation of the human occipital bone

Wolf-Vollenbröker

Prescher

2021

Journal of Anatomy

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This article presents the results of a dissection series investigating a previously neglected ligamentous structure attached to the human occipital bone, the Ligamentum condylicum posterius or posterior condylar ligament, and relates these results to the manifestation of a likewise poorly recognized occipital bony variation, the Processus condylicus posterior. The dissection of 50 human cranio‐cervical junctions revealed the existence of the posterior condylar ligament in 98% of all cases, sometimes containing free elongated ossicles and osseous spurs at the insertion points at the occipital bone. In two cases the osseous formation of a Processus condylicus posterior became apparent (4%), which further provided the opportunity to study the behaviour of the ligament in these cases. In this article, we show and discuss that the posterior condylar ligament and osseous structures possibly derive from tissue that originates from the material of the dorsal arch of the Proatlas, a rudimentary vertebra between occipital bone and atlas. For this purpose, the Ponticulus atlantis posterior as another Proatlas‐manifestation, whose origin from the dorsal Proatlas‐arch is widely accepted in literature, is considered. This bony variant was found in 11 specimens (22%) in the present study and further served to classify and interpret the findings of the much rarer Processus condylicus posterior. As a result of this dissection series and a review of literature on this understudied topic, a typology of manifestations of the posterior condylar ligament, Processus condylicus posterior and related structures like free ossicles has been introduced.

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“…Os Odontoideum (OO), known as a rare anomaly of the cervical spine and can be confused with fracture, involves the second cervical vertebrae, which is characterized by the separation of a portion of the odontoid process (also known as dens) from the body of the axis. 1,2 It was first described by Giacomini in 1886, and whether the etiology of OO is congenital or traumatic has remained controversial. [3][4][5] Notably, OO leads to the instability of atlanto-axial joint, which will increase the risk of spinal cord and vertebral artery injury.…”

Section: Introductionmentioning

confidence: 99%

The 30 Top-Cited Articles on Os Odontoideum: A Bibliometric Study

Li¹

2021

SOJNN

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Objective: To evaluate the top 30 most-cited articles in the literature on os odontoideum. Methods: A search using the Web of Science database and the search phrase "os odontoideum" was conducted. The 30 most-cited articles on osodontoideum were analyzed. The study was performed in May 2020. We searched for articles published between 1920 and 2020. Articles were sorted and ranked according to the total number of citations. We evaluated the following information of each article, including first author, journal, title, number of citations, average citation per year, and author affiliation. Results: A total of 357 studies matched our search criteria, of which the top 30 most-cited ranged between 232 and 60 citations. The article by Dickman et al. published in Neurosurgery, was the most-cited article with a total citation of 232, followed by Dickman et al. with 221 and Smoker et al. with 179. Menezes was the most cited first authors, with 4 articles, followed by Dickman with 3 articles. Child's Nervous System, Journal of Neurosurgery, and Spine were three most frequent destination journals. Most of the articles originated from the United States (n=24) and University of Iowa Hospitals and Clinics published 6 articles and was the highest in the number of most-cited articles. Most of the articles focused on the clinical management of osodontoideum (83.3%). Conclusion: The current study confers a better understanding of current treatment strategies and the advances in the management of osodontoideum. It helps guide the clinical management and academic achievements.

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Os Odontoideum in Children

Cited by 21 publications

References 41 publications

The Great Mimickers of Spinal Pathology

The Great Mimickers of Spinal Pathology

The Ligamentum condylicum posterius as a precursor structure of the Processus condylicus posterior, another Proatlas‐Manifestation of the human occipital bone

The 30 Top-Cited Articles on Os Odontoideum: A Bibliometric Study

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