Where the vertebral and axillary border of the scapula meet
Inferior angle
Degrees of freedom in the SC joint
3
SC and AC
Boxer's muscle
Serratus anterior
What is
When two muscles generate force in different directions on opposite sides of a joint's axis, produces rotary movement
Coracoid process
Only direct attachment of the upper extremity to the axial skeleton
SC joint
Scapula is moving in an inferior direction
Depression
Elevator of the scapula
Levator scapula
Scapulohumeral rhythym: how much abduction occurs only at the GH joint?
30 degrees
Lateral broad, flat end of the spine of the scapula
Acromion process
Scapular
Also known as scapular abduction
Protraction
Dysfunction of the trapezius may result in impairment of what scapular movement?
After initial abduction, _____ degrees of abduction must be accompanied by ____ degrees of scapula movement
2:1
Of the clavicle, this end articulates with the sternum
Sternal end
Roll and slide in the SAME direction (anteriorly)
Upward rotation
Originates: occipital bone, ligamentum nuchae, and spinous processes from C7-T12
Inserts: acromial end of the clavicle, acromion, and spine of the scapula
Trapezius
Upper trapezius, serratus anterior, lower trapezius
Plane of the scapula
30 degrees forward of the frontal plane (not quite midway between flexion/abduction)
Convex/concave
Elevation/depression
Protraction/retraction
Upward/downward rotation
Originates: anterior surface of the 3rd-4th ribs
Inserts: coracoid process of the scapula
Pec minor
Downward rotation muscles
Levator scapula, pectoralis minor, rhomboids