{"id":"c808df2a-96e5-46ef-8f60-5cb2a15b097f","slug":"hypoplasia-of-c1s-posterior-arch-is-there-an-ideal-anatomical-classification","title":"Hypoplasia of C1’s posterior arch: Is there an ideal anatomical classification?","authors":["Messias Gonçalves Pacheco Junior","Nicoly Augusta da Silva Quezada dos Santos","Raphael Tavares Ribeiro","Jose Alberto Landeiro","Bruno Lima Pessoa"],"abstract":"Background: Congenital anomalies of the atlas are rare and usually occur in conjunction with other congenital variants. They include a wide spectrum of anomalies ranging from clefts to hypoplasia or aplasia of its arches that may contribute to spinal cord compressive syndrome. Case Description: A 54-year-old male presented with the sudden onset of a severe quadriparesis and loss of proprioception after a minor fall. The magnetic resonance (MR) scan showed cord compression at the C1 level attributed to C1 arch hypoplasia. Two months following a decompressive C1 laminectomy without fusion, and the patient was symptom free. Conclusion: Posterior C1 arch hypoplasia is a rare anomaly that can contribute to cervical cord compression and myelopathy. The optimal surgical management may include, as in this case, a posterior decompression without fusion.","thumbnailUrl":"https://sni-digital-videos.s3.amazonaws.com/articles/c808df2a-96e5-46ef-8f60-5cb2a15b097f/featured/hero-1781561753241.png","publishDate":"2021-12-20T00:00:00.000Z","doi":"10.25259/SNI_820_2021","categories":["Spine","Case Report"],"fullTextUrl":"https://surgicalneurologyint.com/api/articles/c808df2a-96e5-46ef-8f60-5cb2a15b097f/pdf"}