Cervical Spine Anatomy Flashcards
Parts of Cervical Spine
Occipital Condyles Spinous Processes Transverse Processes Posterion/Anterior Arch of C1 Dens of C2 Facet joints Lanimae, Pedicles, Vertebral Bodies
Uncovertebral Joint
- Synovial Compartment
- Reinforces the posterolateral aspect of the disc
- Reduces sidebending in the cervical spine
- Guides flexion and extension
Intervertebral Formina
Anterior Wall --both vertebral bodies of motion segment, disc Posterior Wall --Facet Joints Superior, inferior walls --pedicles
Upper Cervical Spine
Lateral Mass
Occipital Condyles-Convex
Flexion
45-50
stretched Ligamentum Nuchae
Compressed annulus fibrosis
Extension
85’
stretches anterionr longitudinal ligament
Atlanto-axial joint complex
’
Atlanto-occipital joint-Flexion
Occipital bone (convex) rolls forward and slides backwards on the concave Atlas
Atlantoaxial joint complex B
’
Sidebending
40’
Rotation Atlantoaxial joint complex
=
Cervicocranial Joi nts
Alar Ligament
-connects dens to occiput
-Resists flexion, contralateral sidebending and rotation
Cruciform Ligament
-transverse portion limits anterior translation of C1 on C2
Vertebral Artery
Winds through the
Anterior Cervical Muscles
-Masseter
-Digastric muscles
-Sternocleidomastoid muscle
(sternal head and clavicular head)
-Scalene Muscles (anterior, Middle, Posterior)
-Levator Scapulae
-Trapezius Muscle
Suboccipital Muscles
- Spmispinalis capitis
- Splenius capitis
- Obliquus Capitis Superior
- Rectus Capitis Posterior Minor
- Rectus Capitis Posterior Major
- Obliquus Capitus Inferior
- Semispinalis Cervicis
- Interspinales