Glenohumeral joint

Question 1

What ligaments support the fibrous capsule anteriorly?

Answer 1

Superior, middle, and inferior glenohumeral ligaments

Question 2

What ligament support the fibrous capsule superiorly? What does it extend between?

Answer 2

Coracohumeral ligament

extends between coracoid process of scapula and lesser tuberosity of humerus

Question 3

What is the synovial membrane? What does it form a sheath around?

Answer 3

Lines the joint space, forms a tubular sheath around the tendon of the biceps brachii as it passes through the joint space

Question 4

What does the coracoacromial ligament do? Where is it?

Answer 4

Between the coracoid process and acromion; prevents superior dislocation of shoulder joint

Question 5

What is the subtendinous bursa of the subscapularis?

Answer 5

lies between tendon of subscapularis and neck of scapula. Anterior side of glenohumeral joint

Question 6

What is the subacromial bursa?

Answer 6

Under coracoacromial ligament, superior to supraspinatus tendon and glenohumeral joint capsule

Lies superiorly to glenohumeral joint

Question 7

What is the subdeltoid bursa?

Answer 7

Lies deep to the deltoid muscle and above the subscapularis tendon

lateral side of glenohumeral joint

Question 8

What muscles produce flexion at the glenohumeral joint?

Answer 8

Anterior deltoid (clavcicular), Pectoralis major (clavicular and sternocostal), coracobrachialis, short head of biceps brachii

Question 9

What muscles produce extension of the glenohumeral joint?

Answer 9

Posterior deltoid (spinal), latissimus dorsi, teres major, long head of triceps brachii

Question 10

What muscles abduct the glenohumeral joint?

Answer 10

Middle deltoid (acromial), supraspinous

Question 11

What muscles adduct the glenohumeral joint?

Answer 11

Anterior and posterior deltoid (clavicular and spinal, pectoralis major, latissimus dorsi, teres major, long head of triceps brachii

Question 12

What muscles internally rotate the shoulder?

Answer 12

Anterior deltoid (clavicular), pectoralis major (clavicular), latissimus dorsi, teres major, subscapularis

Question 13

What muscles externally rotate the glenohumeral joint?

Answer 13

Posterior deltoid (spinal), infraspinatus, teres major

Question 14

What is the Glenoid Labrum?

Answer 14

Rim of fibrocartilage attached to the glenoid cavity, deepens articular surface