![]() Review of the axial images revealed an oblique linear lucency along the anterior tubercle of the right transverse process of the C7 vertebra, mimicking a fracture ( Fig. 1). Given the mechanism of injury, he was placed in an immobilizing collar by paramedics prior to arrival, and a CT study of the cervical spine was performed shortly after his stabilization to evaluate for other injuries. Management of his injuries necessitated an extended hospital course. We also provide an augmented reality model of this unique anatomy to illustrate its geometry and aid in diagnosis.Ī 25-year-old male was brought to our emergency department following an assault during which he sustained stab injuries to the left hand and wrist, left flank, right thorax, and right upper quadrant of the abdomen. Uniquely, our report includes the first observation of a partial or incomplete version of the anomaly contralaterally, as well as secondary features of transverse process hypertrophy. In this report, we provide an additional description of an accessory articulation of the transverse processes at C6-C7. However, there have been only two previously reported cases of accessory articulations between the C6 and C7 levels. Our literature search revealed six prior descriptions of such accessory articulations occurring between the C5 and C6 levels, ,,. First described in 1960, this congenital variant is caused by the connection of protuberances extending between the anterior tubercles of the transverse processes of adjacent vertebrae. The accessory articulation of the transverse processes of cervical vertebrae is an extremely rare anatomic occurrence. Finally, we provide the first-ever augmented reality model of this variant to fully convey its geometry and facilitate its unequivocal identification. Our case also includes an incomplete version of the anomaly contralaterally as well as features of secondary osseous stress hypertrophy these features have not been previously described and may aid in diagnosis. ![]() In this report, we summarize this patient's clinical course, and provide an up-to-date review of the current literature, imaging characteristics, and potential mechanisms of the development of this anatomic variant. A CT study of the cervical spine revealed a linear lucency mimicking a fracture but found on closer inspection to represent an accessory articulation between the anterior tubercles of the right transverse processes of the C6 and C7 vertebrae. In this report, we present the case of a 25-year-old male who sustained numerous injuries associated with a physical assault. Accessory articulation between the transverse processes of the C6 and C7 vertebrae is an extremely rare anatomic variant that has only been previously described in two instances.
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