Occipitocervical malformation with atlas duplication
- Fon-Yih Tsuang1,3,
- Jo-Yu Chen2,3,
- Yao-Hong Wang2,3,
- Dar-Ming Lai1,3
- 1Division of Neurosurgery, Department of Surgery, National Taiwan University Hospital, Taipei City, Taiwan
- 2Department of Medical Imaging, National Taiwan University Hospital, Taipei City, Taiwan
- 3Clinical Center of Neuroscience and Behavior, National Taiwan University Hospital, Taipei City, Taiwan
- Correspondence to Dar-Ming Lai, National Taiwan University Hospital, Division of Neurosurgery, Department of Surgery, No.7, Chung-Shan South Road, Taipei City, Taiwan; dmdlai{at}ntu.edu.tw
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Contributors The authors contributed to the study and manuscript preparation as follows: acquisition of data—F-YT, J-YC; drafting the article—F-YT; imaging post-processing—J-YChen; reviewing the final version of the manuscript and approving it for submission—Y-HW, D-ML; study supervision—D-ML.
- Accepted 21 June 2011
- Published Online First 9 August 2011
Introduction
A 55-year-old man presented to our institution with tetraparesis after a ground-level fall. The presence of hyper-reflexia in four limbs led to suspicion of cervical myelopathy. Initial cervical spine plain x-ray films showed spinal canal stenosis at C1/C2, os odontoideum and two atlas-like vertebrae. Duplication of the atlas in humans …
