What is the Clavicle more commonly known as?
The Collar Bone
Where does the Clavicle extend between?
The Sternum and the Acromion of the Scapula
What type of bone is the Clavicle classed as?
A long bone
What are the 3 main functions of the Clavicle?
- Attaches the Upper Limb to the Trunk
- Protects the underlying Neurovascular structures supplying the Upper Limb
- Transmits force from the Upper Limb to the Axial Skeleton
What shape is the Clavicle?
An “S” shape, facing forward:
- The Medial Aspect is Concave
- The Lateral Aspect is Convex
What are the 3 divisions of the Clavicle?
- The Sternal (Medial) End
- The Shaft
- The Acromial (Lateral) End
What is the function of the Large Facet, on the Sternal (Medial) End of the Clavicle?
Articulation with the Manubrium of the Sternum (at the Sternoclavicular Joint)
What is the Inferior Surface of the Sternal (Medial) End of the Clavicle marked by?
Rough Oval Depressions for the Costo-Clavicular Ligament (A ligament of the Sternoclavicular Joint)
What is the function of the Shaft of the Clavicle?
It acts as a point of Origin and Attachment for muscles
What muscles are attached onto the Shaft of the Clavicle?
- Deltoid
- Trapezius
- Subclavius
- Pectoralis Major
- Sternocleidomastoid
- Sternohyoid
What does the Acromial (Lateral) End of the Clavicle house?
A Small Facet
What is the function of the Small Facet, housed in the Acromial (Lateral) End of the Clavicle?
It allows articulation between:
1. The Acromial (Lateral) End of the Clavicle
2. The Acromion of the Scapula
(The Acromioclavicular Joint)
What 2 Ligaments attach onto the Acromial (Lateral) End of the Clavicle?
- Conoid Ligament
2. Trapezius Ligament
Where does the Conoid Ligament attach onto the Clavicle?
The Conoid Tubercle
Where is the Conoid Tubercle located?
The Medial part of the Coracoclavicular Ligament
Where does the Trapezoid Ligament attach onto the Clavicle?
The Trapezoid Line
Where is the Trapezoid Line located?
The Lateral part of the Coracoclavicular Ligament
What is the function of the Coracoclavicular Ligament?
This is a very strong structure which effectively suspending the weight of the upper limb from the Clavicle
Where is the weakest point in the Clavicle? (most common place of fracture during falls)
Between the Middle and Lateral 1/3’s of Clavicle
