Touro Do18 Anatomy - Scapular Region

Front 1

Pectoral Girdle

Back 1

Bones: Clavicle Scapula

Four joints:

Sternoclavicular (clavicle to manubrium)

acromioclavicular (acromion to clavicle)

scapulothoracic

Glenohumeral (scapula to humorus)

Front 2

Clavicle

Back 2

sternal end to manubrium with sternoclavicular joint

acromial end to acromion with acromioclavicular joint

fracutes in middle 1/3 80% distal 1/3 15%

Front 3

Sternoclavicular joint

Back 3

made of:
interclavicular ligament

anterior and posterior sternoclavicular ligaments

costoclavicular ligament

Motions:
anteroposterioroly
superoinferiorly

Front 4

Acromioclavicular Joint

Back 4

articulartion between acromial end of clavical and acromion of scapula

acromoioclavicular ligmaent

coracoclavicular ligament (stronger)

Front 5

Shoulder Separation vs shoulder dislocation

Back 5

separation of clavicle from acromion vs separation of humerus from glenohumeral joint

Front 6

Scapulla

Back 6

2 surfaces, 3 borders, 3 angles

supraspinous and infraspinous fossae

Front 7

coracoid process

Back 7

corocscapular ligament

musles:

coracobrachialis, pectoralis minor, short head of biceps brachii

Front 8

Scapular Notch &
Greater Scapular Notch

Back 8

suprascapular nerve goes through both.

super scapular artery goes though Greater scapular notch.

Front 9

Glenoid Cavity

Back 9

forms glenohumeral joint. has glenoid labrum

supraglenoid and infraglenoid tubercles

Front 10

Scapular movement (elevation)

Back 10

trapezius, levator scapulae, rhomboids

Front 11

Scapular movements (depression)

Back 11

pectoralis minor, trapezius, serratus anterior

Front 12

Scapular movements (protraction)

Back 12

pectoralis minor, serratus anterior

Front 13

Scapular movements (retraction)

Back 13

rhomboids, trapezius, latissiumus dorsi

Front 14

Rotation elevating glenoid cavity

Back 14

trapezius (superior and inferior), serratus anterior

Front 15

Rotation depressing glenoid cavity

Back 15

pectoralis minor, rhomboids, levator scapulae, latissimus dorsi

Front 16

Fexion of arm

Back 16

deltoid (anterior fibers), coracobrachialis, pectoralis major (clavicular head), biceps brachii (short head)

Front 17

Extension of arm

Back 17

deltoid (posterior fibers) triceps (long head), latissiumus dorsi, pectoralis major (sternal head), teres major

Front 18

Abduction of arm

Back 18

supraspinatus, deltoid (middle fibers), serratus anterior, trapezius

Front 19

Adduction of arm

Back 19

Latissimus dorsi, pectoralis major (sternal and clavicular heads), teres major, triceps (long head), subscapularis

Front 20

Int. Rotation

Back 20

subscapularis, pectoralis major (clavicular and sternal heads), teres major,, latissimus dorsi, deltoid (anterior fibers

Front 21

Ext. Roation

Back 21

infraspinatus, teres minor, deltoid

Front 22

greater tubercle and crest

Back 22

supraspinatus, infraspinatus, teres minor

Front 23

Lesser tubercle and crest

Back 23

subscapularis

Front 24

intertubercular groove/sulcus

Back 24

tendon of biceps brachii

Front 25

lateral and medial lips of intertubercular groove

Back 25

pectoralis major, teres major, latissimus dorsi muscles

Front 26

surgical neck

Back 26

axillary nerve

Front 27

Humeral Shaft

Back 27

deltoid tuberosity and radial groove

Front 28

Deltoid Tuberosity

Back 28

attachment of the deltoid muscle

Front 29

Radial Groove

Back 29

radial nerve and profunda brachii artery

Front 30

Glenohumeral Joint

Back 30

formed between head of humerus and glenoid cavity

glenoid labrum deepens

supported by coracoacromial arch and S.I.T.S. tendons

Front 31

articular capsule

Back 31

coracohumeral ligament

transverse humeral ligament

glenohumeral ligaments

Front 32

Deltoid

Back 32

origin: lateral 1/3 of clavical, acomion and spine of the scapula
insertion: deltoid tuberosity
innervation: axillary nerve (C5, C6)

Functions: Abducts 15° - 45°, flexes and medially rotates (clavicular portion), extends and laterally rotates (spinous portion)

Front 33

Supraspinatus

Back 33

Origin: Suprascapular fossa

Insertion: Greater tubericle

Innervation: Superscapular nerve
Supply: Superscapular Artery
Function: Initiation of abduction (0°-15°)

Front 34

Infrasspinatus

Back 34

Origin: Infrascapular fossa
Insertion: Greater tubericle
Innervation: Superscapular nerve
Supply: Superscapular Artery
Function: depression of the glenoid cavity

Front 35

Teres minor

Back 35

Origin: Middler lateral border of scapula

Insertion: Greater tubericle

Innervation: axillary nerve (C5,C6)
Supply:Posterior circumflex humeral artery
Function: lateral rotation of humerus.

Front 36

Teres Major

Back 36

Origin: Inferior angle of the scapula

Insertion: medial lip of intertubercular groove of humerus

Innervation: Lower (inferior) subscapular (C5,C6,C7

Function: adducts, medially rotates, and extends the arm against resistance

Front 37

Subscapularis

Back 37

Origin: Subscapular fossa

Insertion: lesser tubercle of humerous

Innervation: Upper
Supply: Superscapular Artery
Function: Initiation of abduction (0°-15°)

Front 38

Quadragular Space

Back 38

Superior: Teres minor
Inferior: Teres major
Medial: triceps brachii
Lateral: surgical neck of the humorus

Front 39

Triagular Spaces

Back 39

Superiolateral: Teres Minor
Lateral: Long head of triceps brachii
Inferolateral: Teres Major

Front 40

Axillary Nerve

Back 40

Supplies deltoid muscle and teres minor.

Fracture of surgical neck may damager nerve, causing paralysis in both muscles.

Front 41

Shoulder Anastomosis

Back 41

dorsal scapular a.

suprascapular a.

circumflex scapular a.

Front 42

Subclavian artery major branches

Back 42

Vertebral a.

Internal thoracic a.

Thyrocervical trunk

Costocervical a.

Front 43

Thyrocervical trunk branches

Back 43

Inferior thyroid a.

Transverse cervical a.

Superficial branch

Deep branch (dorsal scapular a.)

Suprascapular a.