Acromioclavicular Joint

Question 1

what type of joint is the AC joint?

Answer 1

planar synovial joint

Question 2

what movements are possible at the AC joint?

Answer 2

rotate to elevate/depress glenoid
tilting
winging

Question 3

function of the superior acromioclavicular ligament

Answer 3

strengthen fibrous capsule of AC joint to hold the joint together

Question 4

function of the coracoclavicular ligament

Answer 4

• suspend scapula from clavicle
• resist gravity
• limit depression of scapula
• limit elevation of clavicle

Question 5

what are the 2 parts of the coracoclavicular ligament?

Answer 5

• conoid (coracoid process to conoid tubercle of clavicle)

- trapzoid (more lateral, coracoid process to trapezoid line of clavicle)