Shoulder Complex Ligaments

Question 1

Anterior Sternoclavicular Lig

Answer 1

attach: clavicle to manubrium

Sternoclavicular joint

Question 2

Costoclavicular Lig

Answer 2

Function: stabilizes the sternoclavicular joint
limits elevation of the clavicle
Attach: superior aspect of cartilage of first rib to the undersurface of the clavicle

Question 3

Interclavicular Lig

Answer 3

attach: connects over manubrium from one clavicle to the other
sternoclavicular joint

Question 4

Coracoclavicular lig

Answer 4

function: stabilizes acromioclavicular joint; limiting medial displacement, protraction, and elevation
1. trapezoid: coracoid process to trapezoid line of clavicle
2. conoid: from coracoid process to conoid tubercle of clavicle

Question 5

Superior Glenohumeral Lig (SGHL)

Answer 5

function: stabilizes the glenohumeral articulation

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

Question 6

Middle Glenohumeral Lig (MGHL)

Answer 6

Function: stabilizes the glenohumeral articulation

stabilizes against anterior translation of humerus on glenoid
Resists ER at 45 degress of abduction/scaption

Question 7

Inferior Glenohumeral Lig (IGHL)

Answer 7

Function: stabilizes glenohumeral articulation

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

Question 8

Glenohumeral lig (superior, middle, inferior) attachment

Answer 8

attach: upper part of medial margin of glenoid cavity to the lesser tubercle and anatomic neck

Question 9

Coracoacromial Lig

Answer 9

function: prevents the superior displacement of the humeral head by forming the coracoacromial arch
attach: lateral border of coracoid process to the acromion adjacent to clavicular articulation

Question 10

Coracohumeral Lig

Answer 10

function: reinforces superioranterior aspects of joint capsule
attachment: from base of coracoid process to anterior aspect of the greater tubercle

Question 11

Superior Transverse Scapular Lig

Answer 11

Function: closes off the suprascapular notch
Attachments: from the base of the coracoid process to the medial edge of the suprascapular notch

Question 12

Glenoid Capsule

Answer 12

attachment: from the circumference of the glenoid cavity to anatomical neck of the humerus