Cervical Dx Flashcards
Part of skull that contacts atlas
Occipital condyles
Primary motion of OA joint
Flexion/extension
Which part of the atlas contacts the dens?
The anterior arch
AA joint primary motion
Rotation
Accounts for 50% of cervical rotation
Why is the transverse ligament so important and what compromises its integrity?
It prevents damage to the spinal cord if the atlas were to slide anteriorly on the axis.
Rheumatoid arthritis, down’s syndrome, traumatic injuries such as fractures weaken this ligament.
Three parts of the cruciate ligament
Superior and inferior longitudinal band
Transverse ligament of the atlas
Fancy name for the dens
Odontoid process
Ligaments that connect the odontoid process to the occipital condyles
Alar ligaments
C1/C2 have ______ vertebral bodies and ______ motion.
Atypical bodies and atypical motion
Motion restricted by uncinate processes or joints of Luschka.
These u-shaped joints restrict sidebending in the cervical spine
Ligaments that stabilize the C-Spine
anterior longitudinal ligament posterior longitudinal ligament interspinous ligaments supraspinous ligaments alar ligaments ligamentum nuchae Ligamentum Flava
Features of posterior longitudinal ligament
runs from tectorial membrane (occipital axial ligament) at base of skull to each vertebrae and to the sacrum
runs down the posterior aspect of the vertebral bodies
is wider near the skull and narrower inferiorly which makes it more susceptible to herniation
Nerves of cervical spine
There are 8 nerves of the cervical spine
Exit above the vertebra they are named after except for C8
Brachial plexus: C5-T1, innervates Upper Middle & Lower trunk and arms? Names after relationships to the axillary artery (lateral, posterior, medial) Becomes 5 main nerves: Musculocutaneous, Axillary, Radial, Median, Ulnar
innervation of trapezius
CN 11 (accessory nerve)
Origin/insertion of levator scapulae
transverse processes of C1-C4
superior angle of scapula