Joints

Question 1

What is the acromioclavicular joint?

Answer 1

Synovial Plane
Between the medial acromion and small oval facets on the lateral clavicle
Covered by fribrocartilage
Capsule is strengthened by the acromioclavicular ligament and attached to articular margins

Question 2

Movement of the acromioclavicular joint

Answer 2

small glides of acomion on clavicle

Question 3

What is the sternoclavicular joint?

Answer 3

Synvoial, saddle joint
Clavicle is covered by fibrocartilage
Sterni is covered by hyaline cartilage and costal cartilage of the rib
Intra articular disc between
Capsule surrounds the joint is strengthen by 3 ligaments

Question 4

Ligaments of acromioclavicular joint

Answer 4

Strengthened by acromioclavicular ligament

Coracoclavicular ligament

Question 5

Ligaments of sternoclavicular joint

Answer 5

Costoclavicular ligament
strengthened by: anterior sternoclavicular ligament
posterior sternoclavicular ligament
interclavicular ligament

Question 6

Movement of sternoclavicular joint

Answer 6

small glides

Question 7

Importance of the Shoulder Girdle

Answer 7

increases range f activity of the upper limb by changing the position of the glenoid fossa, relative to the chest wall
clavicle holds shoulder away from chest wall
clavicle absorbs tension and compression stresses by transmission of forces from upper limb to trunk