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abnormalities

A case report of a congenital cleft of the anterior atlas arch: a rare variant of the atlas mimicking fracture

July 08, 2014

Congenital anterior midline clefts of the atlas are rare developmental anomalies with only a few reported cases in the literature. This normal variant of the atlas results when the anterior arch fails to fuse during the ossification process. Series of cadaveric dissections have demonstrated anterior midline atlas clefts in 0.1 -0.2% of the general population.

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Paracondylar process: a rare cause of craniovertebral fusion: a case report

July 04, 2014

A 21-year-old female presented to a chiropractic clinic with chronic neck and headache pain. She had an osseous torticollis and abnormal range of neck motion on rotation to the left. Radiographic examination revealed a unilateral paracondylar process of the occiput fusing to the lateral transverse process of the atlas. A paracondylar process is classified as

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