Upper Extremity Joints

Question 1

What are the 3 Joints of the Pectoral Girdle?

Answer 1

Sternoclavicular
Acromioclavicular
Glenohumeral

Question 2

Saddle type of synovial joint but functions as a ball and socket joint. It is the only articulation between the upper limb and axial skeleton.

Answer 2

Sternoclavicular Joint

Question 3

What two ligaments reinforce the joint capsule of the Sternoclavicular Joint?

Answer 3

Anterior and Posterior Sternoclavicular Ligaments

Question 4

What ligament attaches the sternal end of one clavicle to the stern end of the other clavicle?

Answer 4

Interclavicular Ligament

Question 5

What ligament attaches the inferior surface of the sternal end of the clavicle to the 1st rib and its costal cartilage?

Answer 5

Costoclavicular Ligament

Question 6

What two arteries supply the Sternoclavicular Joint?

Answer 6

Internal Thoracic Artery
Suprascapular Arteries

Question 7

What nerve innervates the Sternoclavicular nerve?

Answer 7

Medial Supraclavicular Nerve

Question 8

What arteries supply the Acromioclavicular Joint?

Answer 8

Suprascapular Artery
Thoracoacromial Arteries

Question 9

What nerves innervate the Acromioclavicular Joint

Answer 9

Lateral Pectoral Nerve
Axillary Nerve

Question 10

Ball and Socket type synovial joint where the hurl head articulates with the Glenoid cavity of the Scapula.

Answer 10

Glenohumeral Joint

Question 11

Attached medially to the margin of the glenoid cavity and laterally to the anatomical neck of the humerus. It encloses the long head of the biceps brachii to the Supraglenoid tubercle of the Scapula.

Answer 11

Glenohumeral Joint Capsule

Question 12

How many apertures does the Glenohumeral Joint have?

Answer 12

2

Question 13

One aperture of the Glenohumeral Joint opens between the tubercles of the humerus, what passes through here?

Answer 13

Biceps Brachii Long Head Tendon

Question 14

Soft fibrous tissue where the humeral head rests in the Glenoid Cavity and serves as an attachment site for several ligaments.

Answer 14

Glenoid Labrum

Question 15

What ligament holds the tendon of the Biceps Brachii in place?

Answer 15

Coracohumeral Ligament

Question 16

What ligament reinforces the anterior capsule of the Glenohumeral Joint and has three fibrous bands?

Answer 16

Glenohumeral Ligament

Question 17

What are the four muscles of the rotator cuff?
(SITS)

Answer 17

Supraspinatus
Infraspinatus
Teres Minor
Subscapularis

Question 18

What is the weakest point of the rotator cuff?

Answer 18

Inferior
(not stabilized by the muscles)

Question 19

Protective structure between the acromion and coracoid process with the coracoacromial ligament spanning between them.

Answer 19

Coracoacromial Arch

Question 20

Protective arch overlying the humeral head preventing superior displacement

Answer 20

Coracoacromial Ligament

Question 21

What arteries supply the Coracoacromial Arch?

Answer 21

Anterior and Posterior Circumflex Humeral Artery
Suprascapular Artery

Question 22

What 3 nerves innervate the Coracoacromial Arch?

Answer 22

Axillary Nerve
Suprascapular Nerve
Lateral Pectoral Nerves

Question 23

Is the Capitullem of the Humerus on the lateral or medial side?

Answer 23

Lateral

Question 24

What does the Capitullem articulate with?

Answer 24

Head of the Radius

Question 25

What does the Trochlea of the Humerus articulate with?

Answer 25

Coronoid Process of the Ulna

Question 26

U Shaped ligament that surrounds the head of the radius.

Answer 26

Annular Ligament

Question 27

Common injury in young children where the radial head becomes dislocated. Possibly from playing or being picked up or pulled by the parent.

Answer 27

Nursemaid's Elbow