Joint and Ligaments of the Shoulder, Arm & Elbow

Question 1

What is the only articulation connecting the upper limb to the axial skeleton?

Answer 1

The sternoclavicular joint.

Question 2

Which structures form the sternoclavicular joint?

Answer 2

The manubrium of the sternum, the medial end of the clavicle, and the 1st costal cartilage.

Question 3

What type of joint is the sternoclavicular joint?

Answer 3

A synovial saddle joint.

Question 4

Which ligaments reinforce the sternoclavicular joint?

Answer 4

The sternoclavicular ligament, the interclavicular ligament, and the costoclavicular ligament

Question 5

What is the function of the sternoclavicular ligament?

Answer 5

It stabilizes the sternoclavicular joint by reinforcing the connection between the sternum and clavicle.

Question 6

What is the role of the interclavicular ligament?

Answer 6

It provides additional support by connecting the clavicles across the manubrium.

Question 7

What is the function of the costoclavicular ligament?

Answer 7

It anchors the clavicle to the 1st rib and costal cartilage, providing stability to the sternoclavicular joint.

Question 8

Which structures form the acromioclavicular joint?

Answer 8

The acromial end of the clavicle and the acromion process of the scapula

Question 9

What type of joint is the acromioclavicular joint?

Answer 9

A plane-type synovial joint.

Question 10

Which ligaments reinforce the acromioclavicular joint?

Answer 10

The acromioclavicular ligament, coracoacromial ligament, and coracoclavicular ligament.

Question 11

What is the function of the acromioclavicular ligament?

Answer 11

It strengthens the joint capsule and stabilizes the connection between the acromion and clavicle.

Question 12

What is the role of the coracoacromial ligament in the AC joint?

Answer 12

It forms a protective arch over the head of the humerus, preventing upward displacement

Question 13

What is the function of the coracoclavicular ligament?

Answer 13

It stabilizes the clavicle by anchoring it to the coracoid process of the scapula.

Question 14

The coracoclavicular ligament is divided into which two parts?

Answer 14

The conoid ligament and the trapezoid ligament.

Question 15

What is the specific role of the conoid ligament?

Answer 15

It prevents excessive upward movement of the clavicle.

Question 16

What is the specific role of the trapezoid ligament?

Answer 16

It resists shearing forces that might separate the clavicle from the scapula.

Question 17

What type of joint is the glenohumeral joint?

Answer 17

A synovial ball-and-socket joint.

Question 18

Which structures form the glenohumeral joint?

Answer 18

The glenoid cavity of the scapula and the head of the humerus.

Question 19

What is a key feature of the glenohumeral joint in terms of mobility and stability?

Answer 19

It has high mobility but low stability.

Question 20

What structures reinforce the stability of the glenohumeral joint?

Answer 20

The labrum, ligaments, and muscles.

Question 21

What is the function of the glenoid labrum?

Answer 21

It deepens the glenoid cavity, improving stability of the joint.

Question 22

What is the role of the transverse humeral ligament in the glenohumeral joint?

Answer 22

It holds the tendon of the long head of the biceps brachii in place within the intertubercular groove of the humerus.

Question 23

What is the function of the coracohumeral ligament?

Answer 23

It strengthens the superior part of the glenohumeral joint and resists downward displacement of the humeral head.

Question 24

What is the role of the subacromial bursa in the glenohumeral joint?

Answer 24

It reduces friction between the supraspinatus tendon and the acromion, facilitating smooth shoulder movements.

Question 25

What is a common clinical issue related to the glenohumeral joint?

Answer 25

Anterior (anteroinferior) dislocations of the humeral head.

Question 26

What condition is associated with inflammation of the subacromial bursa?

Answer 26

Subacromial bursitis.

Question 27

What does “C” stand for in the mnemonic “CRAzy TULips” related to elbow anatomy?

Answer 27

C stands for Collateral ligaments (specifically the radial and ulnar collateral ligaments).

Question 28

What does “R” stand for in the mnemonic “CRAzy TULips”?

Answer 28

R stands for Radial collateral ligament.

Question 29

What does “A” stand for in the mnemonic “CRAzy TULips”?

Answer 29

A stands for the Anular ligament, which wraps around the head of the radius.

Question 30

What does “T” stand for in the mnemonic “CRAzy TULips”?

Answer 30

T stands for the Transverse band of the ulnar collateral ligament.

Question 31

What does “U” stand for in the mnemonic “CRAzy TULips”?

Answer 31

U stands for the Ulnar collateral ligament, which stabilizes the medial side of the elbow.

Question 32

What does “L” stand for in the mnemonic “CRAzy TULips”?

Answer 32

L stands for the Lateral side, referring to the radial collateral ligament on the lateral side of the elbow.

Question 33

What does “I” stand for in the mnemonic “CRAzy TULips”?

Answer 33

I stands for Intermediate fibers, part of the complex structure of the collateral ligaments.

Question 34

What does “P” stand for in the mnemonic “CRAzy TULips”?

Answer 34

P stands for Posterior band of the ulnar collateral ligament.

Question 35

What does “S” stand for in the mnemonic “CRAzy TULips”?

Answer 35

S stands for the Stability provided by these ligaments to the elbow joint during movements like flexion, extension, pronation, and supination.