Acromioclavicular Joint

Question 0

What strengthens the AC joint?

Answer 0

Superiorly: AC ligaments and fibers of the traps

Most of the strength comes from the coracoclavicular ligament

Question 1

What supplies and innervates the AC joint?

Answer 1

the AC joint is supplied by the suprascapular and thoraco-acromial arteries
Supraclavicular, lateral pectoral, and axillary nerves innervate the joint

Question 2

What are the divisions of the coraclavicular ligament and where are their attachments?

Answer 2

Apex of the vertical conoid ligament is attached to the root of the coracoid process. Its wide attachment is to the conoid tubercle on the inferior surface of the clavicle
The nearly horizontal trapezoid ligament is attached to the superior surface of the coracoid process and extends laterally and posteriorly to the trapezoid line on the inferior surface of the clavicle