Progressive hemiparesis due to spino-laminar anomaly of the axis-a case report and literature review.

Introduction: Some of the most common developmental malformations of the axis include anomalies of the odontoid, for example, hypoplasia or aplasia. Isolated anomalies of the posterior arch of the axis rarely occur. This study reports a unique case of congenital anomaly of the neural arch of the axis vertebra, which manifested clinically as progressive hemiparesis.

Congenital Osseous Anomalies of the Cervical Spine: Occurrence, Morphological Characteristics, Embryological Basis and Clinical Significance: A Computed Tomography Based Study.

Study Design: Observational retrospective computed tomography (CT) based study.

Purpose: To analyze the congenital anomalies of the cervical spine, their morphological variations and their clinical significance.

Overview Of Literature: Studies published to date have focused mainly on upper cervical anomalies; no study has comprehensively reported on anomalies of both the occipitocervical and subaxial cervical spine.