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Congenital Hypoplasia of the Posterior Arch of the Atlas Associated with a Fracture of the Odontoid Process - A Case Report -

  • Journal of Korean Society of Spine Surgery
  • Abbr : J Kor Spine Sur
  • 2012, 19(2), pp.64-67
  • Publisher : Korean Society Of Spine Surgery
  • Research Area : Medicine and Pharmacy > Orthopedic Surgery

Sung Kyun Oh 1 이승빈 1

1원광대학교

Accredited

ABSTRACT

Study Design: Case report. Objectives: To report a rare posterior arch hypoplasia of the atlas and review the clinical significance. Summary of Literature Review: Congenital hypoplasia of posterior arch of the atlas is uncommon. In particular, the combined fracture of the odontoid process has not been reported. Material and Methods: A 56-year-old man developed severe neck pain after a traffic accident. Cervical CT scan revealed a fracture of the odontoid process and hypoplasia of posterior arch of the atlas. Results: Bony union was achieved after halo vest immobilization for three months. Conclusions: Hypoplasia of posterior arch of the atlas is determined incidentally in asymptomatic patients. However, the patients should be evaluated in detail with a 3D CT and MRI to avoid a misinterpretation as fracture, instability or misdiagnosis.

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