Shoulder O/I/A/N Flashcards Preview

DPT 652 > Shoulder O/I/A/N > Flashcards

Flashcards in Shoulder O/I/A/N Deck (50)
Loading flashcards...


O: later 1/3 of clavicle, scapular spine, and acromion
I: Deltoid tuberosity
A: All fibers - abduct GHJ, Anterior fibers - flex, medially rotate, and horizontally adduct GHJ, Posterior fibers: extend, laterally rotate, and horizontally abduct GHJ
N: Axillary nerve, C5, C6



O: external occipital protuberance, medial portion of superior nuchal line of occiput, ligamentum nuchae, and spinous processes C7-T12
I: lateral 1/3 of clavicle, spine of scapula, and acromion
A: Bilateral upper fibers extend the head/neck, unilateral upper fibers laterally flex, rotate, and elevate, middle fibers adduct and stabilize the STJ, lower fibers depress the STJ, all fibers together, upwardly rotate the scapula
N: spinal portion of accessory nerve (cranial nerve 11) and ventral ramus C2,3,4


Latissimus Dorsi

O: inferior angle of scapula, spinous process of last 6 thoracic vertebrae, last three or four ribs, thoracolumbar aponeurosis and posterior iliac crest
I: Intertubercular groove of the humerus
A: Extend, adduct, and medially rotate the GHJ
N: Thoracodorsal C6,7,8


Teres major

O: inferior angle and lower 1/3 of lateral border of scapula
I: crest of the lesser tubercle of the tuberus
A: extend, adduct, medially rotate GHJ
N: lower subscapular C5,6,7



O: supraspinous fossa of scapula
I: superior facet of greater tubercle of humerus
A: abduction and stabilization of GHJ
N: suprascapular C4,5,6



O: infraspinous fossa of scapula
I: middle facet on greater tubercle of humerus
A: external rotation, adduction, and stabilize the GHJ
N: Suprascapular C4,5,6


Teres Minor

O: Upper 2/3 of later border of scapula
I: Inferior facet of the greater tubercle of humerus
A: External rotation, adduction, and stabilization of GHJ
N: Axillary C5,6



O: subscapular fossa of scapula
I: lesser tubercle of the humerus
A: internal rotation and stabilization of GHJ
N: Upper and lower subscapular C5,6,7


Rhomboid Major

O: Spinous processes of T-2 to T-5
I: medial border of scapula
A: Retract, elevate, and downwardly rotate scapula
N: Dorsal scapular C4,5


Rhomboid Minor

O: Spinous processes C-7 to T-1
I: upper portion of medial border of the scapula, across from spine of scapula
A: retract, elevate, and downwardly rotate STJ
N: Dorsal scapular C4,5


Levator Scapula

O: transverse processes of C1-4
I: medial border of scapula
A: unilaterally - elevates, downward rotates, laterally flexes, and rotates the head and neck, Bilaterally - extends the head and neck
N: Cervical 3,4 and dorsal scapular C4,5


Serratus Anterior

O: external surfaces of upper 8-9 ribs
I: Anterior surface of medial border of scapula
A: Protract, upwardly rotate, depress, and stabilizes the scapula at STJ
N: long thoracic C5,6,7,8


Pectoralis Major

O: Medial 1/2 of clavicle, sternum, and cartilage of 1-6 ribs
I: Crest of greater tubercle of humerus
A: all fibers - adduct and internally rotate GHJ, assist in thorax elevation, upper fibers - flex and horizontally adduct GHJ, lower fibers - extend GHJ
N: Upper fibers - lateral pectoral C5,6,7 Lower fibers - lateral and medial pectoral C6,7,8,T1


Pectoralis Minor

O: ribs 3,4,5
I: medial surface of coracoid process of scapula
A: depress, protract, and downwardly rotate scapula, elevates thorax
N: medial pectoral, w/ fibers from a communicating branch of lateral pectoral C6, 7, 8, T1



O: first rib and cartilage
I: inferior surface of middle one-third of clavicle
A: depress, elevate, and stabilize the SCJ
N: subclavian C5,6


Biceps Brachii

O: short head - coracoid process of scapula, long head - supraglenoid tubercle of scapula
I: tuberosity of the radius and aponeurosis of the biceps brachii
A: humeroulnar flexion, radioulnar supination, glenohumeral flexion
N: musculocutaneous C5,6


`Triceps Brachii

O: long head - infraglenoid tubercle of the scapula, lateral head - posterior surface of proximal 1/2 of humerus, medial head - posterior surface of distal 1/2 of the humerus
I: Olecranon process of ulna
A: All heads - extend the HUJ, long head - extends and adducts GHJ
N: radial C6,7,8 T1



O: coracoid process of scapula
I: medial surface of mid-humeral shaft
A: flexion and adduction at GHJ
N:musculocutaneous C6,7


coracoclavicular ligament

composed of two smaller ligaments: trapezoid and conoid, both stretch from the coracoid process of the scapula to the inferior surface of the clavicle


Costoclavicular ligament

attaches to sternal end of clavicle on inferior side and to the first rib and cartilage where it articulates w/ the manubrium


Clavipectoral fascia (suspensory ligament of axilla)

- Connects to clavicle to axillary fascia (floor of aarmpit)
- Splits to enclose pectoralis minor and subclavius
- Medial to pectoralis minor, pierced by: cephalic vein, thoracoacromial artery and lateral pectoral nerve


Suprascapular foramen boundaries

Suprascapular notch and suprascapular ligament


Suprascapular foramen innervation

suprascapular nerve


suprascapular foramen vascularization

suprascapular artery


Quadrangular space boundaries

capsule of GHJ, surgical neck of humerus, long head of triceps, superior border of teres major


quadrangular space vascularization

posterior humeral circumflex artery


quadrangular space innervation

axillary nerve


triangular space boundaries

superior border or teres major, inferior border of teres minor, long head of triceps


triangular space vascularization

circumflex scapular artery


triangular interval boundaries

lateral border of long head of triceps, shaft of humerus, inferior margin of teres major