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Journal of Korean Neurosurgical Society 1985;14(3): 557-564.
Transoral Decompression and Anterior Fusion of Atlanto-axial Dislocation due to Os Odontoideum: Case Report.
Jong Chool Lee, Shin Tae Kim, Dong Kyu Kim, Hwa Ryong Rhee
Department of Neurosurgery, Capital Armed Forces General Hospital, Seoul, Korea.
ABSTRACT
The Os odontoideum is a developmental anomaly of the axis in which the odontoid process is divided transversely. The Atlanto-axial dislocation due to Os odontoideum is presented. At first, we have performed the posterior atlanto-axial fusion with wire fixation. But the posterior fusion failed in realignment and did not adequately decompress the deformed cord by encroachment on its ventral surface. Next time, we have experienced further improvement following transoral decompression and anterior fusion.
Key Words: Os odontoideum; Atlanto-axial dislocation; Posterior fusion; Transoral decompression and anterior fusion
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