Anat Cell Biol.  2020 Mar;53(1):111-113. 10.5115/acb.18.194.

A rare triple skeletal bone variation, including a median cleft of the posterior arch of the atlas, a sternal foramina and a bifid xiphoid process

Affiliations
  • 1Department of Anatomy, School of Medicine, Democritus University of Thrace, Alexandroupolis, Greece

Abstract

Bone variations are usually a result of abnormal ossification during embryonic life. Separately or in combination, sternal foramina and bifid xiphoid process are well documented skeletal alternations, as well as the median cleft of the posterior arch of the atlas. However, their appearance in combination is not yet celebrated in the literature. Our post-mortem examination unearthed such a triple variant of an adult male skeleton, which included no other skeletal variations. The fact that all variants are depicted in the median line of ossification implies a hypothesis of a triggered midline bone defect process. The awareness among clinicians of such variations during interventional and imaging procedures is of great importance.

Keyword

Median cleft of the posterior arch of the atlas; Sternal foramina; Bifid xiphoid process; Abnormal embryonic ossification, Bone variants
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