Shoulder Trauma

Question 1

How much of proximal humeral fractures occur at home due to falls?

Answer 1

90%

Question 2

What is the classification system for proximal humeral fractures?

Answer 2

Neer Classification

Question 3

Which type of Neer classification is the most common and has no fragments displaced (80%)?

Answer 3

One-part fracture

Question 4

Which type of Neer classification has 1 fragment displaced >1cm or 45-degrees?

Answer 4

Two-part fracture

Question 5

Which type of Neer classification has displacement of the surgical neck and either the greater or lesser tuberosity?

Answer 5

Three-part fracture

Question 6

Which type of Neer classification has displaced fractures of both tuberosities and surgical neck?

Answer 6

Four-part fracture

Question 7

What is the most common Neer two-part fracture?

Answer 7

Surgical neck fracture

Question 8

What direction is the most common shoulder dislocation?

Answer 8

Anterior

Question 9

How does an anterior shoulder dislocation come about?

Answer 9

forced abduction, external rotation and extension

Question 10

What is the most common type of anterior shoulder dislocation?

Answer 10

Subcoracoid

Question 11

What lesion is a posterolateral humeral head impaction fracture as the humeral head is pressed against the antero-inferior part of the glenoid?

Answer 11

Hill-Sachs lesion

Question 12

What lesion is related to detachment of the anterior inferior labrum from the underlying glenoid as a result of anteriorly dislocated humeral head impacting against the labrum or following the avulsion by the inferior and often seen together with Hill-Sachs?

Answer 12

Bankart lesion

Question 13

How much does a Posterior shoulder dislocation account for of all shoulder dislocations?

Answer 13

2-4%

Question 14

What is the most common cause of Posterior shoulder dislocations?

Answer 14

Convulsive disorder (epilepsy)

Question 15

What Posterior dislocation sign has a widened glenohumeral joint >6 mm?

Answer 15

Rim sign

Question 16

What posterior dislocation sign has a vertical dense line in medial humeral head indicating impaction by the posterior glenoid?

Answer 16

Trough sign

Question 17

What posterior dislocation sign has an internally rotated humeral head takes on a rounded appearance?

Answer 17

Light bulb sign

Question 18

What is the least common shoulder dislocation?

Answer 18

Inferior dislocation

Question 19

What is another name for an inferior dislocation?

Answer 19

luxatio erecta

Question 20

What is a normal AC joint width?

Answer 20

5-8mm

Question 21

What is a normal coracoclavicular distance?

Answer 21

10-13mm

Question 22

What is the classification system used for AC joint injuries?

Answer 22

Rockwood classification

Question 23

What type of Rockwood classification is AC ligament: sprain?

Answer 23

Type 1

Question 24

What type of Rockwood classification is with AC joint rupture and coracoclavicular ligament sprain?

Answer 24

Type 2

Question 25

What type of Rockwood classification is with AC and CC joints ruptured?

Answer 25

Type 3

Question 26

What nerve can be damaged with humeral shaft spiral fractures?

Answer 26

Radial nerve

Question 27

Where is the most common location of a fracture to the shaft of the humerus?

Answer 27

Middle 3rd