10/6 Joints Of Upper Limb I: Shoulder And Elbow - Brauer

Question 1

What are the only two bones that make up joints of the pectoral girdle? 3

Answer 1

Scapula

Clavicle

Question 2

What are the two joints of the pectoral girdle? 3

Answer 2

Sternoclavicular Joint - SC joint

Acromioclavicular joint - AC joint

Question 3

What type of joint is the SC joint? 4

Answer 3

Synovial joint (2 separate synovial cavities)

Double saddle joint or double gliding joint

Question 4

What is the only true boney articulation between the upper limb and thorax? 4

Answer 4

The sternoclavicular joint

Question 5

What are the five movements of the clavicle? What kind of joint is the AC joint?

Answer 5

AC joint is a multiracial joint

Elevation/depression
Protraction/retraction
Rotation

Question 6

Why are dislocations of the sternoclavicular joint rare? 6

Answer 6

Force energy is transmitted through the clavicles away from the joint

Question 7

What is sprengel deformity? 8

Answer 7

Malposition of the scapula that leads to:
Disfigurement
Disfunction
Muscle hypoplasia

Question 8

What’s another name for Sprengel deformity? 7

Answer 8

Congenital high scapula

Question 9

What’s a winged scapula? 8

Answer 9

Brachial plexus injury or infections causes weakening/paralysis of scapular muscles especially serratus anterior m.

Question 10

What makes up the coracoacromial arch? 9

Answer 10

Acromion

Coracoacromial ligament (attaches the two)

Coracoid process

Question 11

What type of joint is the Acromioclavicular joint? 9

Answer 11

Synovial joint

Question 12

What is a Type I and Type II shoulder separation (acromioclavicular dislocation)? 10

Answer 12

Grade 1 —> acromioclavicular ligament sprain

Grade 2 —> acromioclavicular ligament tear

Question 13

What is a type III shoulder separation (acromioclavicular dislocation)? 10

Answer 13

Both the acromioclavicular and coracoclavicular ligaments are torn

Question 14

What is the most common type of glenohumeral joint dislocation? What motion produces this dislocation? 12

Answer 14

Anterior (truly inferior) dislocation

Motion —> hyperextension w/ lateral rotation

Question 15

What is Hill-Sachs Deformity? 13

Answer 15

A posterolateral humeral head compression fracture where the humeral head rests against the anteroinferior part of the glenoid causing chipping of the humeral head

Question 16

What is adhesive capsulitis of the glenohumeral joint (frozen shoulder)? 14

Answer 16

Chronic inflammation of the glenohumeral joint —> fibrosis

Question 17

What are the two types of Glenoid Labrum injury? 15

Answer 17

SLAP —> superior labrum anteroposterior injury

ILAP —> Inferior labrum anteroposterior injury (less common)

Question 18

What happens in a SLAP Glenoid Labrum Injury? 15

Answer 18

The labrum tears due to a sudden contraction of the biceps or subluxation of humerus

Question 19

What are the three separate articulation of the elbow (Cubital) joint? 16

Answer 19

Humeroulnar articulation (trochlea-ulnar)

Humeroradial articulation (capitulum-head of radius)

Proximal radioulnar articulation (ulna-radius)