shoulder girdle Flashcards
serves as a base of
functioning of upper extremity
The shoulder girdle compromises of two bones
scapula and clavicle
shoulder girdle consists of three joints
sternoclavicular joint
acromioclavicular joint
scapulo-thoracic joint
sternoclavicular joint is
sternum + medial end of clavicle
acromioclavicular joint is
acromion process of sternum + lateral end of clavicle
scapulo-thoracic joint is
scapula + posterior part of rib cage
lateral end of clavicle moves in what degrees with protraction
15 anteriorly degrees
lateral end of clavicle moves in what degrees with retraction
posteriorly 15 degrees
lateral end of clavicle moves in what degrees with elevation
superiorly 45 degrees
lateral end of clavicle moves in what degrees with depression
5 degrees inferiorly
acromioclavicular allows what motion in the scapula
gliding and rotational
what type of tilt occurs during shoulder hyper flexion in the AC joint
posterior tilt
what type of tilt occurs during shoulder hyper extension in the AC joint
anterior tilt
Lateral tilt or internal rotation occurs during
shoulder abduction
The lateral border of the scapula moves anteriorly and the medial border moves posteriorly
medial tilt or external rotation
occurs during shoulder adduction
medial border of the scapula moves anteriorly and lateral border moves posteriorly
Movements at SC and AC JOints cause movements of scapula over ribcage
Scapulothoracic joint
Supported dynamically by muscles and no ligamentous support
Scapulothoracic Joint
Scapulothoracic Joints movements are
55 degrees elevation-depression
25 degrees adduction-abduction
60 degrees downward-upward rotation
abduction shoulder girdle movement
Scapula moves laterally away from the spinal column
adduction shoulder girdle movement
Scapula moves medially toward spinal column
elevation shoulder girdle movement
upward or superior movement of scapula, as in shrugging shoulders
depression shoulder girdle movement
downward or inferior movement of scapula, as in returning to normal position
shoulder girdle muscles
Trapezius:upper,middle,lower
Rhomboid:deep
Levator Scapula
serratus Anterior
Pectoralis minor:deep
Shoulder Girdle Muscles all origante on
Axial skleton and insert on scapula or clavicle