Os odontoideum associated with a retro-odontoid cyst treated with posterior C1–C3 fixation: A case report and literature review [PDF]
Frontiers in Surgery, 2023 BackgroundOs odontoideum is a rare abnormality of the upper cervical spine, and os odontoideum associated with a retro-odontoid cyst has been described as a marker of local instability.Case descriptionThis paper reports a case of a 52-year-old female ...
Bei-Xi Bao, Hui Yan, Jia-Guang Tang
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Os odontoideum: database analysis of 260 patients regarding etiology, associated abnormalities, and literature review [PDF]
Frontiers in Surgery, 2023 IntroductionSince the first description of os odontoideum in 1886, its origin has been debated. Numerous case series and reports show both a possible congenital origin and origin from the secondary to craniovertebral junction (CVJ) trauma. We conducted a
Arnold H. Menezes
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Os odontoideum: A comprehensive review [PDF]
Journal of Craniovertebral Junction and Spine, 2022 Os odontoideum (OO) is a rare craniocervical anomaly that is characterized by a round ossicle separated from the C2 vertebral body. With a controversial etiology and unknown prevalence in the population, OO may be asymptomatic or present in patients with
Sia Cho +2 more
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Cervical myelopathy involving os odontoideum with retro-odontoid cyst and atlanto-axial instability: A case report [PDF]
Radiology Case Reports, 2022 Os odontoideum is an unusual anatomic variant of the dens of C2 defined as an independent ossicle separated from the axis; the etiology is a topic of debate, with investigative studies supporting congenital and traumatic origins, clinical manifestations ...
Imane Guerrouj, MD +4 more
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Analysis of surgical strategies and efficacy in the treatment of Os odontoideum with atlantoaxial dislocation [PDF]
Journal of Orthopaedic Surgery and Research, 2023 Background There are many classification systems for atlantoaxial dislocation (AAD). Among these systems, the definitions of irreducible AAD remain vague, and its treatments are not unified.
Baohui Yang +3 more
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The mutational burden in os odontoideum patients [PDF]
Orphanet Journal of Rare DiseasesBackground Os odontoideum(OO) is a rare bone malformation at the craniovertebral junction, the presence of which can lead to potential instability of atlantoaxial joints. The cause, prevalence and treatment of OO are still controversial.
Yinglun Tian +7 more
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Post-traumatic os odontoideum - case presentation and literature review [PDF]
Trauma Case Reports, 2018 Os odontoideum is a rare condition. Nevertheless this condition was described by Giacomini in 1886. It is defined radiologicaly as an oval or round-shaped ossicle of variable size with smooth circumferential cortical margins representing the odontoid ...
Yuri Klassov +2 more
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Os odontoideum-induced sudden onset myelopathy following cervical extension injury in an adult—case report on challenges and management with 3D navigation technology [PDF]
Frontiers in SurgeryOs odontoideum is a relatively rare congenital anomaly of the upper cervical spine. It occurs due to developmental failure of the C2 odontoid process. Symptomatic patients develop instability resulting in cervical spinal cord compression.
Sathish Muthu +5 more
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Posterior Circulation Ischemic Stroke From Atlantoaxial Instability and Lateral Dislocation due to Os Odontoideum: Case Report and Review of Literature [PDF]
Orthopaedic SurgeryBackground Strokes in young individuals often stem from unusual causes. Posterior circulation ischemic stroke caused by vertebral artery insufficiency due to atlantoaxial instability or dislocation is rare.
Xianghe Wang +8 more
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Posterior Sublaminar Wiring and/or Transarticular Screw Fixation for Reducible Atlantoaxial Instability Secondary to Symptomatic Os Odontoideum: A Neglected Technique? [PDF]
Asian Spine Journal, 2019 Study Design Retrospective case analysis. Purpose We retrospectively evaluated the clinical and radiological outcomes of posterior sublaminar wiring (PSLW) and/or transarticular screw fixation (TASF) for reducible atlantoaxial instability (AAI) secondary
Han Chang +4 more
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