Actions Flashcards

1
Q

Flexion

-110deg from neutral (>110deg=ext through flex to 180deg)

A

Deltoid (and ant fibres)
Pectoralis Major (clavicular head)
Biceps Brachii- weak

Limited by- antagonist tension

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2
Q

Extension

-50-70deg from neutral

A
Deltoid (post fibres)
Teres Major
Latissimus Dorsi 
Pectoralis Major (sternocostal head)- only from flex to neutral
Long head Triceps

Limited by- antagonist tension

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3
Q

Abduction

-100-120deg (>120deg=elevation through abd to 180deg)

A

Deltoid (middle fibres)
Supraspinatus- initiates

Limited by- antagonist tension

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4
Q

Adduction

-30-40deg

A

Pectoralis Major
Latissimus Dorsi- against R
Teres Major
Coracobrachialis

Limited by- side of body

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5
Q

Medial Rotation

-±90deg

A
Subscapularis 
Pectoralis Major
Latissimus Dorsi
Deltoid (ant fibres)
Teres Major

Limited by- antagonist tension

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6
Q

Lateral Rotation

-80deg

A

Infraspinatus
Teres Minor
Deltoid (post fibres)- prime mover

Limited by- antagonist tension

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7
Q

Elevation

A

Scapulohumeral rhythm - movement at GH and scapulothoracic jts

From 0-30deg = pure GH movement
From 30-180deg = 2:1 humeral abd: scapula lat rotation

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8
Q

Circumduction

A

=combination of all other movements

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