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Os Odontoideum의 진단 및 치료

Other Titles
 Diagnosis and Management of Os Odontoideum 
 김승민  ;  윤도흠  ;  조용은  ;  김영수 
 Journal of Korean Neurosurgical Society (대한신경외과학회지), Vol.26(9) : 1272-1281, 1997 
Journal Title
 Journal of Korean Neurosurgical Society (대한신경외과학회지) 
Issue Date
Os odontoideum ; Atlantoaxial instability ; SAC(Space Available for Cord)
The authors analyzed 17 cases of os odontoideum. a very rare condition and one of the causes of atlantoaxial instability. We investigated the radiographic findings of os odontoideum and classified the patients according to clinical grade, radiographic findings and direction of atlantoaxial instability. Their mean age was 33.4 years, and the male to female ratio was. 7: 10. Thirteen patients(76.5%) were classified as clinical grade 3, indicating fixed or progressive myelopathy. They were classified as one of two types, according to the location of the os, five were dystopic and ten were orthotopic. In remaining two patients, it was difficult to classify. We measured SAC(space available for cord) laterally, using plain film, and sagittally, using MR imaging, and compared the results with clinical symptoms. SAC as seen on cervical MRI, correlated more closely with severity of cord compression than did SAC seen on plain film. The 15 patients underwent various operative methods including C1/2 fixation, occipito-cervical fusion, and transoral decompression; because of postoperative hardware failure, two required further surgery. Postoperatively, twelve patients showed excellent or good neurologic improvement. In this retrospective study, SAC seen on cervical MRI was a very good indicator of the need for surgery, and surgery should be considered in patients whose clinical grade is higher than 2.
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1. College of Medicine (의과대학) > Dept. of Neurosurgery (신경외과학교실) > 1. Journal Papers
Yonsei Authors
Yoon, Do Heum(윤도흠) ORCID logo https://orcid.org/0000-0003-1452-5724
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