Term
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Definition
Supraspinatus
Infraspinatus
Teres minor
Subscapularis |
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Term
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Definition
ORIGIN: lat 1/3 of clavicle
INSERTION: deltoid tubercle
ACTION: abduction, flexion, horizontal adduction
NERVE: axillary |
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Term
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Definition
ORIGIN: acromion
INSERTION: deltoid tubercle
ACTION: abduction
NERVE: axillary |
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Term
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Definition
ORIGIN: scapular spine
INSERTION: deltoid tubercle
ACTION: abduction, extension, horizontal abduction
NERVE: axillary |
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Term
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Definition
- from POSTERIOR cord of brachial plexus
- prone to injury (i.e. during shoulder dislocation)
- winds around the neck of the humerus
- paralysis & loss of sensation |
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Term
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Definition
ORIGIN: lower lateral border and inferior angle of scapula
INSERTION: crest of LESSER tubercle and medial lip of intertubercular sulcus
ACTION: internal rotation, adduction, extension
NERVE: lower subscapular nerve |
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Term
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Definition
ORIGIN: supraspinous fossa of scapula
INSERTION: superior facet of greater tuberosity of humerus
ACTION: initiates ABD, compression of the GH joint
NERVE: suprascapular nerve |
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Term
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Definition
ORIGIN: infraspinous fossa of scapula
INSERTION: middle facet greater tuberosity of humerus
ACTION: external rotation
NERVE: suprascapular nerve |
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Term
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Definition
| nerve runs through notch, artery goes above ligament.. see pic |
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Term
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Definition
ORIGIN: upper part of lateral border of scapula
INSERTION: inferior facet of greater tubercle of humerus
ACTION: external rotation
NERVE: axillary nerve |
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Term
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Definition
ORGIN: subscapular fossa (anterior scapula)
INSERTION: lesser tubercle of humerus
ACTION: internal rotation
NERVE: upper & lower subscapular nerve |
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Term
| superior transeverse scapular ligament |
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Definition
| runs above scapular notch where suprascapular nerve and artery go |
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Term
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Definition
ORIGIN: infraglenoid tubercle of scapula
INSERTION: olecranon process
ACTION: elbow extension, shoulder extension
NERVE: radial |
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Term
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Definition
ORIGIN: posterior surface of lateral border of humerus
INSERTION: posterior part of olecranon
ACTION: elbow extension
NERVE: radial |
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Term
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Definition
ORIGIN: posterior lower shaft of humerus
INSERTION: olecranon process
ACTION: elbow extension
NERVE: radial |
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Term
| triceps brachii kinesiology |
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Definition
- long head crosses elbow AND shoulder joint
- the long head becomes ACTIVELY INSUFFICIENT when full elbow extension is attempted w/ shoulder hypertension |
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Term
Which triceps exercise is harder? Why?
Triceps kickbacks vs. triceps pull downs |
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Definition
| triceps kickbacks b/c long head of triceps is actively insufficient (less contribution from long head) whereas triceps pull downs utilize all 3 heads |
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Term
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Definition
borders:
1. teres minor (sup)
2. teres maj (inf)
3. surgical neck of humerus (lat)
4. long head of triceps (med)
Sig:
- the axillary nerve and posterior circumflex humeral artery can be found here (supplies deltoids & shoulder joint) |
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Term
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Definition
borders:
1. long head of triceps
2. lateral head of triceps
3. teres major (sup border)
Sig:
- the RADIAL nerve and the PROFUNDA BRACHII ARTERY are found in this space (they travel along the same pathway) |
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Term
| posterior shoulder tightness |
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Definition
Contracture (becomes "tight") of the posterior shoulder structures commonly seen in overhead athletes, particularly baseball players.
-repetitive eccentric contraction during deceleration of the limb
-RESULTS IN: Glenohumeral Internal Rotation Disorder (GIRD); Ant/Sup migration of the humeral head during ER
-related to a variety of pathologies (impingement, labral lesions, rotator cuff, etc) |
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