Ligaments of Pectoral (shoulder) Girdle

Question 1

Coracoclavicular:

Trapezoid

Answer 1

function- stabilizes acromioclavicular joint limiting medial displacement, protraction & elevation

attachments- from coracoid process to trapezoid line of clavicle

Question 2

Coracoclavicular:

Conoid

Answer 2

function- stabilizes acromioclavicular joint limiting medial displacement, protraction & elevation

from coracoid process to conoid tubercle of clavicle

Question 3

Acromioclavicular

Answer 3

function- stabilizes acromioclavicular joint

attachments- from superior aspect of acromial end of the clavicle to adjacent acromion

Question 4

Coracoacromial

Answer 4

function- prevents the superior displacement of the humeral head by forming the coracoacromial arch

attachments- from lateral border of coracoid process to acromion adjacent to clavicular articulation

Question 5

Coracohumeral

Answer 5

function- reinforces superoanterior aspects of joint capsule

attachments- from base of coracoid process to anterior aspect greater tubercle

Question 6

Costoclavicular

Answer 6

function- stabilizes sternoclavicular joint, limiting elevation of the clavicle

attachments- from superior aspect of cartilage of first rib to undersurface of the clavicle

Question 7

Superior transverse scapular

Answer 7

function- closes off the suprascapular notch

attachments- from the base of the coracoid process to the medial edge of the scapular notch

Question 8

Glenoid capsule

Answer 8

attachments- from the circumference of glenoid cavity to anatomical neck of the humerus

Question 9

Glenohumeral (three ligg.; superior, middle, inferior)

Answer 9

function- stabilizes glenohumeral articulation

Superior: stabilizes against inferior translation of the humerus on the glenoid with humerus at 0 degrees of abduction

Middle: stabilizes against anterior translation of humerus on glenoid

Inferior: stabilizes against inferior translation of humerus on the glenoid with the humerus at 90 degrees of abduction

attachments- from upper part of medial margin of glenoid cavity to lesser tubercle & anatomical neck