motions of the ac joint

Question 0

anterior/posterior tilting

Answer 0

forward/backward tilt of the glenoid fossa

Question 1

internal/external rotation

Answer 1

glenoid faces anteriomedially/posterolaterally

Question 2

upward/downward rotation

Answer 2

glenoid fossa faces up or down

closely tied with rotation of the clavicle

Question 3

ligaments of the ac joint

Answer 3

superior acromioclavicular
inferior acromioclavicular
coracoclavicular (conoid-medial, trapezius-lateral)