Pectoral girdle- Clavicle Flashcards
What is the job of the clavicle?
to transmit supportive stresses of the upper limb to the axial skeleton
The clavicle protects what along its course from neck to upper limb?
the auxiliary neurovascular bundle
How does the clavicle increase the range of potential movement of the shoulder joint?
By acting as a strut, holding the glenohumeral joint in the parasagittal plane
What does the clavicle articulate with?
Scapula: Acromial end
Sternum/Manubrium: Sternal end
What comes from the suprascapular artery as it passes deep to omohyoid?
Nutrient Foramen
What attaches to the Costal tuberosity (can be depression or facet-like)?
The Costoclavicular ligament, to 1st rib
What attaches to the anterior and medial surface of clavicle?
M. pectoralis major: (also from sternum)
Which points does pectoralis major attach to and what does it do?
anterior and medial surface of clavicle, to humerus, Lateral lip of the bicipital groove
-adduction, medial rotation and flexion of arm
What attaches to the Posterior and medial surface of clavicle?
M. sternohyoid
Sternohyoid runs from the posterior and medial surface of clavicle to where? What does it do?
to hyoid, depresses hyoid
What attaches to the Conoid tubercle?
Conoid ligament
From and to where does the conoid ligament run?
from scapula, to coracoid process
What runs from the 1st rib to the Subclavian groove and is responsible of the depression of clavicle?
M.Subclavius
What runs from the spine (also to scapula, superior nuchal line) to the Lateral and posterior surface of the clavicle?
M. trapezius:
M. trapezius is responsible of..
the elevation, adduction, depression and rotation of scapula
What runs from the Medial and posterior surface of the clavicle (also from manubrium) to mastoid process and what does it do?
M. sternocleidomastoid
head rotation and flexion
M. deltoid runs from the Lateral and anterior surface of clavicle (also from scapular) to where? What does it do?
to humerus, deltoid tuberosity
flexion, extension, rotation, abduction of arm
Variation of clavicle is shape and size; appearance of costal tuberosity, position of nutrient foramen, shape of acromion. True or false
True
80% of all fractures of the clavicle occur at the junction of the two curvatures. True or false
True
The clavicle is the most frequently fractured bone in the body. Fracture usually results following a fall on the outstretched hand or onto the shoulder. True or false
True
Fracture of the clavicle can cause rupture to the subclavian vessels (resulting in severe haemorrhage) or pneumothorax. True or false
True
The conoid tubercle is found on which surface of the clavicle?
Inferior
How many angles does the body of the adult scapula have?
2
