However, a cervical computed tomography scan revealed calcification surrounding the odontoid process, which was consistent with crowned dens syndrome, they wrote. Plain CT scan showing calcification ...

But both sloths and manatees are exceptions to this rule having abnormal numbers of cervical vertebrae. New research shows how such different species have evolved their unusual necks.

The muscle activity was measured with surface electromyography. The cervical vertebrae motion was recorded by cineradiography (90 frames/s X-ray) and analyzed to quantify the rotation and translation ...