Elbow, Shoulder & Scapula Anatomy

Question 1

Elbow flexion

Answer 1

Biceps/Brachialis innervated by musculocutaneous nerve & Brachioradalis innervated by radial nerve

Question 2

Biecps

Answer 2

Origin: Coracoid process & supraglenoid tubercle
Insertion: Radial tuberosity
Fx: Elbow flex w forearm supinated

Question 3

Brachialis

Answer 3

Origin: Distal 2/3 humerous
Insertion: ulnar tuberosity
Fx: Elbow flex w forearm pronated

Question 4

Brachioradalis

Answer 4

Origin: Supracondylar ridge
Insertion: Distal radius
Fx: Elbow flex w forearm neutral

Question 5

Elbow Extension

Answer 5

Triceps/Anconeus innervated by radial nerve

Question 6

Triceps

Answer 6

Origin: Long head - infraglenoid tuberosity, Lateral head - posterior humerus & med head - distal to lateral head
Insertion: Olecranon
Fx: Elbow exten

Question 7

Anconeus

Answer 7

Origin: Lat epi & capsule of elbow joint
Insertion: Olecranon & upper 1/4 of dorsal ulna
Fx: elbox exten

Question 8

Rotator Cuff Muscles

Answer 8

Supscapularis, suprapinatus, infrapinatus & teres minor

Question 9

Supscapularis - subscapular nerve innervation

Answer 9

Origin: ant surface of scap
Insertion: Lesser tuberosity
Fx: In rot

Question 10

Supraspinatus - suprascapular nerve innervation

Answer 10

Origin: Supraspinatus fossa
Insertion: Greater tuberosity
Fx: aBduction/flex

Question 11

Infraspinatus - suprascapular nerve innervation

Answer 11

Origin: infraspinatus fossa
Insertion: greater tuberosity
Fx: ex rot

Question 12

Teres Minor - axillary nerve innervation

Answer 12

Origin: axillary border of scap
Insertion: greater tuberosity
Fx: ex rot

Question 13

Shoulder Flexion Muscles

Answer 13

Ant deltoid & coracobrachalis & supraspinatus

Question 14

Ant deltoid - axillary nerve innervation

Answer 14

Origin: Clavical
Insertion: Deltoid Tuberosity
Fx: Shoulder flex

Question 15

Coracobrachalis - musculocutaneous nerve innervation

Answer 15

Origin: coracoid process
Insertion: medial aspect of deltoid
Fx: Shoulder flex

Question 16

Shoulder aBduction Muscles

Answer 16

Mid deltoid & supraspinatus

Question 17

Mid Deltoid - axillary nerve innervation

Answer 17

Origin: acromin
Insertion: deltoid tuberosity
Fx: Shoulder aBduction

Question 18

Horz aBduction Muscles

Answer 18

Post delt

Question 19

Post Deltoid - axillary nerve innervation

Answer 19

Origin: spine of scap
Insertion: delt tuberosity
Fx: Horz aBduction

Question 20

Horz Adduction Muscles

Answer 20

Pec Major

Question 21

Pec Major - Lat pectoral nerve innervation

Answer 21

Origin: medial clavical, sternum & ribs 1-7
Insertion: greater tuberosity
Fx: horx adduction

Question 22

Shoulder Extension Muscles

Answer 22

Lat dorsi, teres major& post deltoid

Question 23

Lat Dorsi - thoracodorsal nerve innervation

Answer 23

Origin: T6-T12, L1-L5, sacral vert, ribs 9-12, iliac crest & inferior angle of scap
Insertion: intertubracal groove of humerus
Fx: shoulder exten

Question 24

Teres Major - subscap nerve innervation

Answer 24

Origin: inferior angle of scap
Insertion: intertubracal groove of humerus
Fx: shoulder exten

Question 25

Scapular Upward Rotation Muscles

Answer 25

Traps & Serratus Anterior

Question 26

Traps - Spinal Accessory Nerve (CNXI) Innervation

Answer 26

Origin: U fibers- occiput/ligamentus nuchae; M- spinous process of T1-T5; L- spinous processes of T6-T12 Insertion: U- lat 1/3 of clavical; M- acromin/spine of scap; L- medial end of spine of scap Fx: Up rot of scap

Question 27

Serratus Ant - Long thoracic nerve Innervation

Answer 27

Origin: Ribs 1-8/aponeurosis of intercostals Insertion: Sup/inferior angles of scap & vertebral border of scap Fx: Up rot of scap

Question 28

Scapular Downward Rotation Muscles

Answer 28

Levator scapulae, rhomboids. serratus ant & lat dorsi

Question 29

Levator Scapulae - C3-4 nerve innervation

Answer 29

Origin: C1-4 transverse process Insertion: Vertebral border of scap Fx: Down rot of scap

Question 30

Rhomboids (major/minor) - Dorsal Scap Nerve Innervation

Answer 30

Origin: C7-T5 spinous process Insertion: Vertebral boarder - distal to spine of scap Fx: Down rot of scap

Question 31

Scap Adduction Muscles

Answer 31

Middle Traps, Rhomboids Major

Question 32

Scap aBduction Muscles

Answer 32

Serratus Ant

Question 33

Scap Elevation Muscles

Answer 33

Upper Traps/Levator Scap

Question 34

Scap Depression Muscles

Answer 34

Lower Traps