Ligaments Of The Shoulder Complex

Front 1

SC Joint Ligament

Anterior and Posterior Sternoclavicular

Back 1

Prevents anterior and posterior displacement of the medial clavicle.

Front 2

SC Joint Ligament

Costoclavicular

Back 2

Prevents excessive elevation of clavicle.

Front 3

SC Joint Ligament

Interclavicular

Back 3

Prevents excessive depression of clavicle.

Front 4

AC Joint Ligament

Acromioclavicular

Back 4

Prevents dislocation.

Front 5

AC Joint Ligament

Coracoclavicular (Trapezoid and Conoid)

Back 5

Prevents backward motion.

Front 6

AC Joint Ligament

Coracoacromial

Back 6

Serves as a roof to protect underlying glenohumeral joint. Can be a site of impingement for the greater tubercle with the humeral head affecting the supraspinatus tendon.

Front 7

Glenohumeral Joint Ligament

Glenohumeral

Back 7

Prevents excessive extension and ER.

Front 8

Glenohumeral Joint Ligament

Coracohumeral

Back 8

To keep humeral head in the glenoid fossa against gravity.

Front 9

Glenohumeral Joint Ligament

Transverse Humeral

Back 9

Located over bicipital groove. Acts as a roof for the long head of the biceps tendon.

Front 10

Other structures of the shoulder joint

Glenoid Labrum

Back 10

A fibrocartilagenous ring extending out of the glennoid fossa. It deepens the fossa and increases congruency.

Front 11

Other structures of the shoulder joint

Subacromial/Subdeltoid bursa

Back 11

Separates the supraspinatus tendon and head of the humerus from the acromion, corocoid process, and deltoid muscle. Permits smooth gliding between the humerus and the supraspinatus tendon. It is located under the acromion and the deltoid.