1.3.2. The Clavicle

Question 1

What is the Clavicle more commonly known as?

Answer 1

The Collar Bone

Question 2

Where does the Clavicle extend between?

Answer 2

The Sternum and the Acromion of the Scapula

Question 3

What type of bone is the Clavicle classed as?

Answer 3

A long bone

Question 4

What are the 3 main functions of the Clavicle?

Answer 4

1. Attaches the Upper Limb to the Trunk
2. Protects the underlying Neurovascular structures supplying the Upper Limb
3. Transmits force from the Upper Limb to the Axial Skeleton

Question 5

What shape is the Clavicle?

Answer 5

An “S” shape, facing forward:

1. The Medial Aspect is Concave
2. The Lateral Aspect is Convex

Question 6

What are the 3 divisions of the Clavicle?

Answer 6

1. The Sternal (Medial) End
2. The Shaft
3. The Acromial (Lateral) End

Question 7

() end is the blunt, thickened, proximal (medial) end of the clavicle attached to the clavicular notch of the sternum

Answer 7

Sternal extremity

Question 8

What is the function of the Large Facet, on the Sternal (Medial) End of the Clavicle?

Answer 8

Articulation with the Manubrium of the Sternum (at the Sternoclavicular Joint)

Question 9

What is the Inferior Surface of the Sternal (Medial) End of the Clavicle marked by?

Answer 9

Rough Oval Depressions for the Costo-Clavicular Ligament (A ligament of the Sternoclavicular Joint)

Question 10

What is the function of the Shaft of the Clavicle?

Answer 10

It acts as a point of Origin and Attachment for muscles

Question 11

What muscles are attached onto the Shaft of the Clavicle?

Answer 11

1. Deltoid
2. Trapezius
3. Subclavius
4. Pectoralis Major
5. Sternocleidomastoid
6. Sternohyoid

Question 12

() flattened distal or lateral end of the clavicle

Answer 12

acromial extremity

Question 13

What does the Acromial (Lateral) End of the Clavicle house?

Answer 13

A Small Facet

Question 14

What is the function of the Small Facet, housed in the Acromial (Lateral) End of the Clavicle?

Answer 14

It allows articulation between:
1. The Acromial (Lateral) End of the Clavicle
2. The Acromion process of the Scapula
(The Acromioclavicular Joint)

Question 15

What 2 Ligaments attach onto the Acromial (Lateral) End of the Clavicle?

Answer 15

1. Conoid Ligament
2. Trapezid ligament

Forms the coracoclavicular ligament

2. Trapezius Ligament

Question 16

Where does the Conoid Ligament attach onto the Clavicle?

Answer 16

The Conoid Tubercle

Question 17

Where is the Conoid Tubercle located?

Answer 17

The roughened elevation on the inferior surface, near the acromial end

(medial part of the coracoclavicular ligament)

Question 18

Where does the Trapezoid Ligament attach onto the Clavicle?

Answer 18

The Trapezoid Line

Question 19

Where is the Trapezoid Line located?

Answer 19

Lateral part of the Coracoclavicular Ligament

Question 20

What is the function of the Coracoclavicular Ligament?

Answer 20

This is a very strong structure which effectively suspending the weight of the upper limb from the Clavicle

Question 21

Where is the weakest point in the Clavicle? (most common place of fracture during falls)

Answer 21

Between the Middle and Lateral 1/3’s of Clavicle

Question 22

() end is the blunt, thickened, proximal (medial) end of the clavicle attached to the clavicular notch of the sternum

Answer 22

Sternal extremity