The procedure begins with a midline incision descending from below the inion to just superior to the sub-axial cervical spine. Next, a retractor is used to separate the muscles of the splenius capitis and dissection continues until the posterior arch of C1 and the lamina of C2 are visible.

Dec 6, 2023 · The atlas (plural: atlases) is the first cervical vertebra, commonly called C1. It is an atypical cervical vertebra with unique features. It articulates with the dens of the axis and the occiput, respectively allowing rotation of the head, and flexion, extension and lateral flexion of …

Jul 31, 2013 · To clarify the landmark for deciding the entry point for C1 lateral mass screws via the posterior arch by using 3-dimensional (3D) computed images. Resnick insisted that the C1 posterior arch could be divided into pure posterior and lateral lamina (C1 pedicle).

Nov 13, 2024 · C1 and C2 are the first two vertebrae at the upper part of the cervical spine. Together, they form a complex structure that supports the skull, known as the atlantoaxial joint. This structure also provides an optimal range of motion without compromising stability.

Jun 13, 2024 · Identify the unique anatomical features of the C1 vertebra, including the anterior and posterior arches and the lack of a vertebral body. Implement appropriate initial management strategies for C1 fractures, including external immobilization …

Rarely inadequate cervical laminectomy of C1 arch may result in residual compression at the level of obex even after “lax” duraplasty. A cervico-dural angle (angle between the neo-dura and cervical dura) at level foramen magnum can be observed in these patients.

Jun 23, 2021 · Cervical Lateral Mass Fracture Separations of the lateral mass-facet are uncommon cervical spine injuries characterized by a high degree of instability and neurological deficits. Diagnosis is made with CT scan of the cervical spine. Treatmet is usually posterior decompression and two-level instrumented fusion.

The most famous alternative methods of C1 screw fixation are intralaminar (laminar) C1 fixation, occipitospondylodesis (expansion of the fixation zone to occiput), C1 cables, C1 laminar hooks, and wires.

Apr 5, 2025 · The C1 vertebra, known as the atlas, is the superior-most vertebra in the spinal column. It plays vital roles in the support of the skull, spinal cord, and vertebral arteries and provides attachment points for several muscles of the neck.

Objective: To clarify the landmark for deciding the entry point for C1 lateral mass screws via the posterior arch by using 3-dimensional (3D) computed images. Methods: Resnick insisted that the C1 posterior arch could be divided into pure posterior and lateral lamina (C1 pedicle).