Shoulder Joint

Question 0

What are the Scapular Landmarks?

Answer 0

~Glenoid Fossa
~Subscapular Fossa
~Infraspinous Fossa
~Supraspinous Fossa
~Lateral Border
~Medial Border
~Labrum (Fibrocartilaginous)
~Acromion Process

Question 1

What are the four groups of motions that are possible at the shoulder?

Answer 1

Flexion/Extension
ABduction/ADduction
Medial/Lateral Rotation
Horizontal ABduction/ADduction

Question 2

What are the Humeral Landmarks?

Answer 2

~Head of Humerous
~Anatomical Neck
~Surgical Neck
~Shaft of the Humerous
~Greater Tubercle
~Lesser Tubercle
~Deltoid Tuberosity
~Intubecular Groove

Question 3

What muscles make up the Rotator Cuff?

Answer 3

Supraspinatus S
Infraspinatus I
Teres Minor T
Subscapularis S

Question 4

What are two types of Bursae?

Answer 4

Subdeltoid (located between the deltoid and the joint capsule)
Subacromial (Lies below the acromion and coracoacromial ligament.)

Question 5

What does the rotator cuff do?

Answer 5

These muscles help keep the head of the humerus “rotating” against the glenoid fossa during joint motion.

Question 6

What all is involved in shoulder stability?

Answer 6

• Glenoid Labrum
• Glenoid Fossa Anterior/Lateral and Upward Direction
• Coracohumeral and Glenohumeral Ligaments Reinforce Joint Capsules
• Capsule completely surrounds the fossa, creates partial vaccum
• Rotator Cuff Muscle
• Shoulder Muscle

Question 7

Define the OIAN of the Anterior Deltoid.

Answer 7

O: Anterior: Lateral 1/3 of clavicle 
I: Deltoid Tuberosity
A: Flexion
    Medially Rotate
    Horizontal ADduction
    ABduction

N: Axillary C5,6

Question 8

Define the OIAN of the Middle Deltoid.

Answer 8

O: Acromion Process
I: Deltoid Tuberosity
A: ABduction

N: Auxillary C5,6

Question 9

Define the OIAN of the Posterior Deltoid.

Answer 9

O: Spine of Scapula
I: Deltoid Tuberosity
A: Extension, Lateral Rotation, Horizontal ABduction, ADduction

Question 10

Define the OIAN of the Supraspinatus.

Answer 10

O: Supraspinous Fossa of Scapula
I: Greater Tuberosity of Humerous
A: Shoulder ABduction, Stabilizes head of Humerus in Glenoid Cavity

N: Suprascapular, C5,6

Question 11

Define the OIAN of the Pectoralis Major.

Answer 11

O: Medial Half of Clavicle
     Sternum
     Cartilage of ribs 1-6
I: Crest of Greater Tubercle of Humerous
A: (all fibers) ADduct the Shoulder
     Medially Rotate
     Assist in Elevating Thorax during Inhalation
     (Upper Fibers) Flex Shoulder
     Horizontally ADduct
     (Lower Fibers) Extend the Shoulder

N: Lateral and Medial Pectoral, C5-T1

Question 12

Define the OIAN of the Teres Major.

Answer 12

O: Inferior Angle
     1/3 Lateral Border of Scapula
I: Crest & Lesser Tubercle of Humerus
A: Shoulder Extension
     ADduct
     Medially Rotate

Question 13

Define the OIAN of the Latissimus Dorsi.

Answer 13

O: Inferior Angle of Scapula
     Spinous Process of Last 6 Thoracic Vertebrae
     Last 3-4 Ribs
     Thorocolumbar aponeurosis 
     Post Illiac Crest
I: Intertubercular Groove of Humerus
A: Shoulder Extension
    ADduct
    Medially Rotate

N: Thoracodorsal C6,7,8

Question 14

Define the OIAN of the Infraspinatus.

Answer 14

O: Infraspinous Fossa of Scapula
I: Greater Tubercle of Humerus
A: Shoulder Lateral Rotation
    ADduct Shoulder
    Stabilize Head of Humerus

N: Suprascapular, C4,5,6

Question 15

Define the OIAN of the Teres Minor.

Answer 15

O: Upper 2/3 of Lateral Border of Scapula
I: Greater Tubercle of Humerus
A: Laterally Rotates Shoulder
    ADducts Shoulder
    Stabilizes Head of Humerus

N: Auxillary, C5,6

Question 16

What does the long head of the Triceps separate?

Answer 16

Separates the Teres Major and Teres Minor at the axilla.

Question 17

Define the OIAN of the Subscapularis.

Answer 17

O: Subscapular Fossa
I: Lesser Tubercle of Humerus
A: Medially Rotates Shoulder
Stabilizes the Head of the Humerus

N: Subscapular, C5,6,7

Question 18

Define the OIAN of the Coracobrachialis.

Answer 18

O: Coracoid Process of Scapula
I: Medial Surface of Mid-humeral Shaft
A: Flex and ADduct Shoulder

N: Musculocutaneous, C6,7

Question 19

Define the OIAN of the Subclacius.

Answer 19

O: 1st Rib and Cartilage
I: Inferior Surface of Middle 1/3 of Clavicle
A: Depress the Clavicle
Elevate 1st Rib
Stabilize the Sternoclavicular Joint

N: Subclavian C5,6

Question 20

Define the OIAN of the Biceps Brachii.

Answer 20

O: Supraglenoid Tubercle
     Coracoid Process
I: Radial Tuberosity
   Aponeurosis of Biceps Brachii
A: Shoulder Flexion
     Elbow Flexion
     Forearm Supination

N: Musculocutaneous, C5,6

Question 21

Define the OIAN of the Triceps Brachii.

Answer 21

O: Infraglenoid Tubercle
Posterior Surface of Proximal Half of the Humerous
Posterior Surface of Distal Half of Humerus
I: Olecranon Process of Ulna
A: (ALL) Elbow Extension
(Long Head) Extend and ADduct Shoulder

N: Radial, C6,7,8,T1

Question 22

What motion occurs when the Deltoid and the Rotator Cuff Function together?

Answer 22

These muscles cause ABduction.

Question 23

Which muscles provide Flexion?

Answer 23

Anterior Deltoid

Pectoralis Major

Question 24

Which muscles provide Extension?

Answer 24

Posterior Deltoid Latissimus Dorsi Teres Major Pectoralis Major

Question 25

Which muscles cause Hyperextension?

Answer 25

Latissimus Dorsi | Posterior Deltoid

Question 26

Which muscles provide ABduction?

Answer 26

Deltoid | Supraspinatus

Question 27

Which muscles provide ADduction?

Answer 27

Pectoralis Major Teres Major Latissimus Dorsi

Question 28

Which muscles provide Horizontal ABduction?

Answer 28

Posterior Deltoid Infraspinatus Teres Minor

Question 29

Which muscles provide Horizontal ADduction?

Answer 29

Pectoralis Major | Anterior Deltoid

Question 30

Which muscles provide Lateral Rotation?

Answer 30

Infraspinatus Teres Minor Posterior Deltoid

Question 31

Which muscles provide Medial Rotation?

Answer 31

``` Latissimus Dorsi Teres Major Subscapularis Pectoralis Major Anterior Deltoid ```

Question 32

What is SITS an acronym for?

Answer 32

Supraspinatus Infraspinatus Teres Minor Subscapularis

Question 33

SITS is an acronym. Knowing what the acronym stands for, which ones are inserted into the Greater Tubercle and which ones insert into the Lesser Tubercle?

Answer 33

Greater: ~Supraspinatus ~Infraspinatus ~Teres Minor Lesser: ~Subscapularis

Question 34

What Spinous Process is equal with the Spine of the Scapula?

Answer 34

T2

Question 35

When asked what type of joint the shoulder is and FLUID is mentioned with it, what is the name of that joint?

Answer 35

Synovial Joint

Question 36

When asked what type of joint the shoulder is you would say?

Answer 36

Ball and Socket

Question 37

What do all of the deltoids do together?

Answer 37

ABduct