Upper C spine Flashcards
what ligament becomes the tectorial membrane up at the skull?
PLL
what ligament becomes the anterior atlantooccipital membrane?
ALL
what ligament becomes the posterior atlantooccipital ligament?
ligamentum flavum
what does the alar ligament do?
connects dens to foramen magnum- it resists flexion, contralat. SB and contralat. rot
how do u test the alar ligament?
test SB in neutral, flexion and extension, must be lax in all 3 positions
what does the transverse ligament do?
holds dens against the atlas and away from the spinal cord, keeps motion between C1 and C2 in rotation, not translation. if dens translates back 3 mm= gross instability, 6-8 mm = cord compression symptoms
superior oblique does what motion?
contralateral rotation, extenstion, ipsilat SB
inferior oblique does what motion?
ipsilateral rotation
what do RCP maj and min do?
extend head, major also does ipsilat. SB and rot
rectus capitis anterior
flex head
rectus capitus lateralis
ipsilat. SB
longus colli
stabilizes vertebrae
what NN supply all structures to the upper C spine?
dorsal and ventral rami of C1-C3
coupling in upper C spine
opposite
OA joint
AA joint
OA= flex/ext AA= rotation