Os Odontoideum as a Consequence of a Posttraumatic Displaced Ossiculum Terminale

2009 ◽  
Vol 91 (7) ◽  
pp. 1750-1754 ◽  
Author(s):  
Eiji Wada ◽  
Takashi Matsuoka ◽  
Hideo Kawai
Keyword(s):  
Os Odontoideum ◽  
Ossiculum Terminale

Os odontoideum associated with hypertrophic ossiculum terminale

2001 ◽  
Vol 94 (1) ◽  
pp. 140-144 ◽  
Author(s):  
Hiroshi Sakaida ◽  
Shiro Waga ◽  
Tadashi Kojima ◽  
Yoshichika Kubo ◽  
Shigehiko Niwa ◽  
...  
Keyword(s):  
Transoral Approach ◽  
Os Odontoideum ◽  
Autogenous Bone ◽  
Current Case ◽  
Content Type ◽  
Rare Association ◽  
Considerable Confusion ◽  
Ossiculum Terminale ◽  
Fine Print

✓ The authors report on the case of a 20-year-old man who presented with a transient tetraparesis. Neuroimaging studies demonstrated atlantoaxial dislocation and ventral compression of the rostral spinal cord caused by a quite rare association of os odontoideum and hypertrophic ossiculum terminale. The patient underwent removal of two free ossicula via a transoral approach and posterior fusion in which an autogenous bone graft was placed. The majority of cases of os odontoideum are believed to be an acquired form; however, controversy with regard to the congenital causes of os odontoideum remains. One hypothesis is that os odontoideum results from the failure of fusion and the hypertrophy of the proatlas, although considerable confusion surrounds this hypothesis because definitive classification of os odontoideum—to differentiate between similar anomalies—has not been established. This rare coincidence in the current case supports the belief that os odontoideum has a different embryological origin from ossiculum terminale, which is thought to be a proatlantal remnant.

Endoscopic Transnasal Resection of Os Odontoideum: A Microanatomal Study

Skull Base ◽  
2011 ◽  
Vol 21 (S 01) ◽  
Author(s):  
Rohit Koppula ◽  
Ameet Singh ◽  
Fabio Roberti
Keyword(s):  
Os Odontoideum

Hypertrophy of C-1 anterior arch: useful sign to distinguish os odontoideum from acute dens fracture.

Radiology ◽  
1989 ◽  
Vol 173 (1) ◽  
pp. 207-209 ◽  
Author(s):  
R G Holt ◽  
C A Helms ◽  
P L Munk ◽  
T Gillespy
Keyword(s):  
Os Odontoideum ◽  
Anterior Arch ◽  
Dens Fracture

Os Odontoideum with Posterior Atlantoaxial Instability

Spine ◽  
1991 ◽  
Vol 16 (7) ◽  
pp. 706-715 ◽  
Author(s):  
NOBUKI SHIRASAKI ◽  
KOZO OKADA ◽  
SHIRO OKA ◽  
NOBORU HOSONO ◽  
KAZUO YONENOBU ◽  
...  
Keyword(s):  
Atlantoaxial Instability ◽  
Os Odontoideum

The Role of Conservative Management in Incidental Os Odontoideum

2016 ◽  
Vol 88 ◽  
pp. 695.e15-695.e17 ◽  
Author(s):  
David White ◽  
Rafid Al-Mahfoudh
Keyword(s):  
Conservative Management ◽  
Os Odontoideum

Use of a titanium mesh cage for posterior atlantoaxial arthrodesis

2002 ◽  
Vol 96 (1) ◽  
pp. 127-130 ◽  
Author(s):  
Morio Matsumoto ◽  
Kazuhiro Chiba ◽  
Takashi Tsuji ◽  
Hirofumi Maruiwa ◽  
Yoshiaki Toyama ◽  
...  
Keyword(s):  
Donor Site ◽  
Atlantoaxial Instability ◽  
Os Odontoideum ◽  
Posterior Arch ◽  
Rigid Fixation ◽  
Titanium Mesh ◽  
Content Type ◽  
Atlantoaxial Fixation ◽  
Mesh Cage ◽  
Atlantoaxial Arthrodesis

✓ The authors placed titanium mesh cages to achieve posterior atlantoaxial fixation in five patients with atlantoaxial instability caused by rheumatoid arthritis or os odontoideum. A mesh cage packed with autologous cancellous bone was placed between the C-1 posterior arch and the C-2 lamina and was tightly connected with titanium wires. Combined with the use of transarticular screws, this procedure provided very rigid fixation. Solid fusion was achieved in all patients without major complications. The advantages of this method include more stable fixation, better control of the atlantoaxial fixation angle, and reduced donor-site morbidity compared with a conventional atlantoaxial arthrodesis in which an autologous iliac crest graft is used.

scholarly journals Post-traumatic os odontoideum - case presentation and literature review

2018 ◽  
Vol 18 ◽  
pp. 46-51
Author(s):  
Yuri Klassov ◽  
Vadim Benkovich ◽  
M. Moti Kramer
Keyword(s):  
Literature Review ◽  
Os Odontoideum ◽  
Case Presentation ◽  
Post Traumatic

Two Surgical Cases of Os Odontoideum in Spondyloepiphyseal Dysplasia Tarda.

1995 ◽  
Vol 44 (2) ◽  
pp. 535-540
Author(s):  
Kunihiko Uehara ◽  
Sakae Sato ◽  
Yukio Kinjo ◽  
Tetsuya Yara ◽  
Shintoku Isa ◽  
...  
Keyword(s):  
Os Odontoideum ◽  
Spondyloepiphyseal Dysplasia ◽  
Spondyloepiphyseal Dysplasia Tarda
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