Shoulder Ligaments and Muscles

Question 1

The superior, middle and inferior gleno-humeral ligaments

Attachments and Function

Answer 1

Three bands, which runs with the joint capsule from the glenoid fossa to the anatomical neck of the humerus. They act to stabilise the anterior aspect of the joint.

Question 2

Coracohumeral ligament

Attachments and Function

Answer 2

Attaches the base of the coracoid process to the greater tubercle of the humerus.
It supports the superior part of the joint capsule.

Question 3

Transverse humeral ligament

Attachments and Function

Answer 3

Spans the distance between the two tubercles of the humerus.
It holds the tendon of the long head of the biceps in the intertubercular groove.

Question 4

Flexors

Answer 4

Deltoid (anterior part)
Pectoralis major
Biceps brachii (long head)
Coracobrachialis (weak)

Question 5

Deltoid (anterior part)

Attachments

Answer 5

Anterior border of lateral third of clavicle to deltoid tuberosity of humerus

Question 6

Pectoralis major

Attachments

Answer 6

Clavicular attachment - sternal half of anterior surface of clavicle
Sternocostal attachment - body of sternum, upper 6 costal cartilages
To lateral lip of intertubercular groove of the humerus

Question 7

Biceps Brachii Long Head

Attachments

Answer 7

Supraglenoid tubercle of the scapula to the posterior part of the radial tuberosity

Question 8

Coracobrachialis

Attachments

Answer 8

Apex of coracoid process to middle, medial border of humerus

Question 9

Abductors

Answer 9

Supraspinatous

Deltoid (posterior part)

Question 10

Supraspinatous

Attachments

Answer 10

Supraspinous fossa to shoulder capsule and greater tuberosity of humerus

Question 11

Deltoid (posterior part)

Attachments

Answer 11

Lower edge of crest of spine of scapula to deltoid tuberosity of humerus

Question 12

Nerve Supply

Answer 12

Axillary, suprascapular and lateral pectoral

Question 13

Capsular Pattern

Answer 13

Lateral rotation
Abduction
Medial rotation