AC Joint

Question 1

What ligament attaches clavicle to acromion

Answer 1

Acromioclavicular ligament

Question 2

Function of acromioclavicular ligament

Answer 2

Horizontal stability

Question 3

What Ligament connects coracoid process to clavicle

Answer 3

Coracoclavicular ligament

Question 4

Function of coracoclavicular ligament

Answer 4

Prevents vertical translation of clavicle

Question 5

What makes up the coracoclavicular ligament

Answer 5

Trapezoid and conoid ligament

Question 6

What ligament connects coracoid to acromion

Answer 6

Coracoacromial ligament

Question 7

What is the provocative test for AC joint injury

Answer 7

Cross-chest/horizontal/scarf - passive adduction across midline

Question 8

What are the 2 main ligaments that are injured in AC joint injuries

Answer 8

acromioclavicular and coracoclavicular ligaments

Question 9

What happens to AC and CC ligaments in a Type 1-Type 6 AC joint injury,

Answer 9

AC = partial sprain in Type 1 and Complete tear in types 2-6.
CC = nothing in type 1, partial sprain in type 2, complete tear in types 3-6

Question 10

What kind of clavicular displacement is seen in AC joint injuries?

Answer 10

Type 1 = nothing 
Type 2 = nothing
Type 3 = superior
Type 4 = posterior and superior
Type 5 = posterior and superior > 100%
Type 6 = Inferior

Question 11

Which AC joint injuries are treated with Rehab and which are treated with surgery

Answer 11

Type 1-3 = rehab

Type 4-6 = surgery

Question 12

How long do you wear a sling for Types 1 and 2 injuries

Answer 12

1-2 weeks

Question 13

When can the patient return to play after Type 1 and 2 injuries

Answer 13

1 = ASx with full ROM for 2 weeks
2 = ASx with full ROM for 6 weeks

Question 14

Treatment of AC joint injury/pain

Answer 14

AC joint injection