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13 Cards in this Set
- Front
- Back
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Primary movers of ST joint
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Trapezius
Rhomboid Levator Scapulae Serratus Anterior |
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Shoulder Girdle
Primary movers of the GH joint |
Deltoid
Biceps Coracobrachialis Triceps Latissimus Pectoralis Major and Minor Teres major |
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DELTOID
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O-clavicle, acromion, spine of scapula
I- deltoid tuberosity A-Abducts arm, anterior fibers flex and medial rotate, posterior fibers extend and lateral rotate N- Axillary nerve |
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BICEPS BRACHII
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O-Long head:supraglenoid tubercle of scapula. Short head: coracoid process
I- bicipital tuberosity of radius A- Supinates forearm, flexes elbow, weakly flexes shoulder N- Musculocutaneous nerve |
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CORACOBRACHIALIS
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O- Coracoid process
I- Upper half medial border of humerus A- Flexes and weakly adducts arm N- Musculocutaneous nerve |
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TRICEPS
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O-Long head: infraglenoid tubercle of scapula. Lateral head: upper half posterior humerus, Medial head: humerus
I- olecranon process A- Extends elbow. Long head stabilizes shoulder joint. medial head retracts capsule of elbow joint on extension N- Radial nerve |
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TERES MAJOR
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O- inferior angle of scapula
I- Medial lip of bicipital groove of humerus A- Medially rotates and adducts arm. Stabilizes shoulder joint N- Lower subscapular nerve |
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Rotator Cuff
muscles that make it up? |
Supraspinatus
Infraspinatus Teres Minor Subscapularis |
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SUPRASPINATUS
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O- supraspinous fossa of scapula
I- greater tuberosity of humerus A- Abducts arm and stabilizes shoulder joint N- Suprascapular nerve |
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INFRASPINATUS
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O- infraspinous fossa of scapula
I- of greater tuberosity of humerus A- Laterally rotates arm and stabilizes shoulder joint N- Suprascapular nerve |
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TERES MINOR
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O-lateral border of scapula above teres major
I- greater tuberosity of humerus A- laterally rotates arm and stabilizes shoulder joint N- Axillary nerve |
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SUBSCAPULARIS
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O- subscapular fossa
I- Lesser tuberosity of humerus, upper medial lip of bicipital groove A- Medially rotates arm and stabilizes shoulder joint N- Upper and lower subscapular nerves |
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Scapulohumeral Rhythm
Overhead motion is a combination of... |
GH and ST motions
Normal = 2 : 1 ratio, > than 90 degrees In other words, both the GH and ST joints must work properly for normal overhead shoulder motion |
