The Anatomy Of The Pedicle Of The Axis

Description

Centered on the second cervical vertebra (axis, C2), the animation isolates the pedicle as the short, stout bony bridge running from the posterolateral margin of the vertebral body to the posterior elements. As the sequence rotates around the cervical spine in anatomical position, the pedicle is read in relation to the superior and inferior articular processes, the laminae, and the base of the spinous process, with the transverse process and transverse foramen lateral to the pedicle. Medially, the spinal canal forms the key negative space, while the vertebral body and the odontoid process (dens) sit anterior and superior. Boundaries become clearer as the camera passes through oblique and posterior perspectives. C2 pedicle anatomy matters because it is a primary fixation corridor for posterior cervical instrumentation, and millimeters count when placing C2 pedicle screws. The animated progression clarifies how the pedicle axis angles medially and cephalad relative to the vertebral body and canal, a relationship that is difficult to appreciate from a single view and directly tied to avoiding breach into the spinal canal or violation of the transverse foramen where the vertebral artery runs. It also supports teaching around traumatic pathology at C2, including hangman’s fracture patterns that involve the pars interarticularis and can be confused with true pedicle injury without a solid three-dimensional mental model. Use this asset in spine anatomy blocks, neurosurgery and orthopedic residency teaching on posterior cervical fixation, and radiology education when correlating C2 osseous landmarks with axial CT and sagittal reformats. It also fits well in surgical technique chapters discussing C2 screw options (pedicle vs pars vs laminar) and in patient-facing material explaining why screw trajectories near the vertebral artery require preoperative CT planning. Anatomical accuracy verified by SciePro's Medical Advisory Board.