Anatomy of the Cervical Spine

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Cervical Spine Anatomy
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Presentation transcript:

Anatomy of the Cervical Spine Physician Name Physician Institution Date

Cervical Spine Anatomy Primary function Mobility, support, and protection of spinal canal and neural structures

Cervical Spine Anatomy 1 2 3 4 5 6 7 Vertebrae (7) Intervertebral discs (6) Pairs of exiting nerve roots (8) Cervical lordosis Occ-C7 averages 40° Most of the lordosis occurs at the C1-C2 segment

Cervical Spine Anatomy Approximately 50% of flexion-extension motion occurs at occiput-C1 Approximately 50% of rotation occurs at C1-C2 Lesser amounts of flexion-extension, rotation, and lateral bending occur segmentally between C2-C7

Cervical Spine Anatomy

Cervical Spine Anatomy Atypical vertebral structure C1 (atlas) Vertebral canal/foramen Anterior arch Anterior tubercle Transverse process Posterior arch Transverse foramen Lateral mass Inferior Superior Occipital condyles Foramen magnum

Cervical Spine Anatomy Occiput-C1 segment The occiput-C1 joints are synovial joints comprising the convex occipital condyles, which articulate with the concave lateral masses of C1

Cervical Spine Anatomy Occiput-C1 segment Motion at the occiput-C1 segment is restricted primarily to flexion-extension due to bony structures, ligamentous constraints, and the absence of an intervertebral disc

Cervical Spine Anatomy Atypical cervical vertebra C2 (axis) Odontoid process or dens Vertebral canal/foramen Facet joints Transverse process Transverse foramen Bifid spinous process Lamina anterior view posterior view

Cervical Spine Anatomy The odontoid process of the axis (C2) extends cranially to form the axis of rotation with atlas (C1)

Cervical Spine Anatomy C1-C2 segment The primary motion at the C1-C2 joint is rotation

Cervical Spine Anatomy C1-C2 segment The primary motion at the C1-C2 joint is rotation

Cervical Spine Anatomy Ligaments The cervical spine also features a complex arrangement of ligaments to supplement its structure and mobility

Cervical Spine Anatomy Ligaments Anterior longitudinal ligament Posterior longitudinal ligament Ligamentum flavum Intertransverse ligaments Interspinous ligaments Ligamentum nuchae

Cervical Spine Anatomy Ligaments Anterior longitudinal ligament Posterior longitudinal ligament Ligamentum flavum Intertransverse ligaments Interspinous ligaments Ligamentum nuchae

Cervical Spine Anatomy Ligaments Anterior longitudinal ligament Posterior longitudinal ligament Ligamentum flavum Intertransverse ligaments Interspinous ligaments Ligamentum nuchae

Cervical Spine Anatomy Ligaments Anterior longitudinal ligament Posterior longitudinal ligament Ligamentum flavum Intertransverse ligaments Interspinous ligaments Ligamentum nuchae

Cervical Spine Anatomy Ligaments Anterior longitudinal ligament Posterior longitudinal ligament Ligamentum flavum Intertransverse ligaments Interspinous ligaments Ligamentum nuchae

Cervical Spine Anatomy Ligaments Anterior longitudinal ligament Posterior longitudinal ligament Ligamentum flavum Intertransverse ligaments Interspinous ligaments Ligamentum nuchae

Cervical Spine Anatomy Neural elements 8 pair of cervical nerves Exit the spinal canal superior to the vertebrae for which they are numbered C1 nerves exit the canal between Occ & C1 C2 nerves exit the canal between C1 & C2 C8 nerves exit the canal between C7 & T1

Cervical Spine Anatomy Arteries Carotid arteries Located anterior and bilateral to the spine Vertebral arteries Enter the transverse foramen at C6 and continue through C1

Cervical Spine Anatomy Veins Jugular veins Located bilateral and anterior to the spine. Vertebral veins Located within the transverse foramen of C1-C7

Cervical Spine Anatomy Neural and Circulatory Elements