Median Atlantoaxial Joint

Question 1

Median Atlantoaxial Joint classifiaction

Answer 1

Synovial, pivot joint: An articulation between the dens of the axis and the ring formed by the anterior arch and the transverse ligament of the atlas

Question 2

Median Atlantoaxial Joint articular surfaces

Answer 2

Anterior facet on the dens of the Axis
Facet on the posterior surface of the anterior arch of the Atlas
Transverse Ligament of the Atlas

Question 3

Median Atlantoaxial Joint joint capsule & synovial membrane

Answer 3

Each of the median joints is enclosed by a thin fibrous capsule lined by synovial membrane

Question 4

Median Atlantoaxial Joint ligaments

Answer 4

atlas transverse ligament
cruciform
tectorial
alar
apical lig of dens
ligamentum nuchae
ligamentum flavum

Question 5

Transverse Ligament of the Atlas origin & insertion

Answer 5

Is a strong thick band arching behind the dens and attaching to a small tubercle on the medial side of each lateral mass of the atlas.

Question 6

what movement does the Transverse Ligament of the Atlas limit?

Answer 6

Posterior translation of the dens

Question 7

Cruciform Ligament origin

Answer 7

middle of transverse ligament

Question 8

Cruciform Ligament insertion

Answer 8

anterior edge of the foramen magnum and back of the body of the axis

Question 9

what movement does the Cruciform Ligament limit?

Answer 9

Posterior translation of the dens

Question 10

Tectorial Membrane origin

Answer 10

body of axis

Question 11

Tectorial Membrane insertion

Answer 11

anterior edge of the foramen magnum

Question 12

what movement does the Tectorial Membrane limit?

Answer 12

flexion

Question 13

Alar Ligament origin

Answer 13

apex of the dens

Question 14

Alar Ligament insertion

Answer 14

medial side of respective occipital condyles

Question 15

what movements does the Alar Ligament limit?

Answer 15

Posterior translation of the dens , Side flexion

Question 16

Apical Ligament of the Dens origin

Answer 16

apex of the dens

Question 17

Apical Ligament of the Dens insertion

Answer 17

anterior edge of the foramen magnum

Question 18

what movement does the Apical Ligament of the Dens limit?

Answer 18

Posterior translation of the dens

Question 19

Ligamentum Nuchae origin

Answer 19

rom spine of C7

Question 20

Ligamentum Nuchae insertion

Answer 20

external occipital protuberance and crest

Question 21

what movement does the Ligamentum Nuchae limit?

Answer 21

flexion

Question 22

Ligamentum Flavum origin

Answer 22

between laminae of adjacent vertebrae from C1 and C2

Question 23

Ligamentum Flavum insertion

Answer 23

between laminae of adjacent vertebrae down to L4 and L5

Question 24

what movement does the Ligamentum Flavum limit?

Answer 24

flexion

Question 25

Median Atlantoaxial Joint movements

Answer 25

15° of rotation