Shoulder Girdle Flashcards
What is the role of the shoulder girdle
Connect axial and appendicular
Between clavicle and sternum
Manubrium of sternum
What are the joints of the shoulder
Acromioclavicular
Sternoclavicular
Scapulothoratic
Where is the acromioclavicular joint and what kind is it
Between acromion process of scapular and outer end of clavicle
Gliding joint
Allows greater ROM
What is the Sternoclavicular joint and what kind is it
Only bony connection between the two skeletons
Saddle joint (multiaxial)
Ab/ad elevation and depression
Explain the landmarks of the scapular
- Top point - superior angle
- Bottom point - inferior angle
- Spine of scapula - bony ridge joint laterally across posterior surface
- Acromion process, large bony prominence you can feel, most lateral point
- Coracoid process - middle top process
- Glenoid fossa - pint of articulating for glenohumoral joint, below acromion process
What are the shoulder girdle movements
Elevation
Depression
Abduction
Addiction
Upward rotation
(Relative to angle of inferior angle)
What are the muscles of the shoulder girdle
Posterior: trapezius, rhomboids, levator scapulae
Anterior: pectoralis minor, serratus anterior
What are the main muscle of the shoulder
Posterior: trapezius, rhomboids, levator scapulae
Anterior: pectalis minor, serratus anterior
What is the nuchal ligament
From occipital bone to c7
Attachment for some muscles
What do the rhomboids and levator scapulae do
Elevation
(Adduction
Downward rotation= only rhomboids)
Where do the rhomboids originate and insert
Insert Medial border of scapula
Originate c7-t5
Where does levator scapulae insert and originate
O c1-4
I above spine of scapulae
What does the trapezius do
Upper fibres, extend head and elevation
Middle, addiction, elevation, upwards rotation
Lower, adduction, depression, upwards rotation
Where does the trapezius originate and insert
Origin Upper - nucal ligament and spine
Spine
Insert
Upper- lateral side of clavicle
Middle, superior border of scapular spine
Lower - base of spine of scapular
What does the serratus anterior do
Abduction
Upward rotation