Shoulder

Question 1

Clavicle

Answer 1

S-shaped contour
Forward facing medial part is convex
Forward facing lateral part is concave
Inferior surface of lateral third of clavicle - conoid tubercle and lateral roughening - trapezoid line (these are for attachment of coracoclavicular ligament)

Question 2

Articulating surface of clavicle

Answer 2

lateral end - surface of articulation with acromion

Medial end - with sternum and first costal cartilage

Question 3

Infraglenoid tubercle

Answer 3

Roughening below glenoid cavity - site of attachment of long head of triceps brachii

Question 4

Supraglenoid tubercle

Answer 4

Roughening above glenoid cavity - site of attachment of long head of biceps brachii

Question 5

Coracoid process

Answer 5

Projects anterolaterally and is directly inferior to lateral part of clavicle

Question 6

Acromion

Answer 6

Anterolateral projection of the spine, arches over glenohumeral joint

Question 7

Greater tubercle of humerus

Answer 7

lateral in position.
Superior facet - supraspinatus
Middle facet - infraspinatus
Inferior facet - teres minor

Question 8

Lesser tubercle of humerus

Answer 8

Anterior in position

Attachment of subscapularis

Question 9

Bicipital groove

Answer 9

separates greater and lesser tubercle and continues inferiorly down shaft of humerus.
Tendon of long head of biceps brachii passes through this groove

Question 10

Roughenings on intertubercular sulcus

Answer 10

Lateral lip - pectoralis major
floor - latissimus dorsi
Medial lip - teres major

Question 11

Deltoid tuberosity

Answer 11

Continuation of lateral lip of intertubular sulcus - deltoid insertion

Question 12

Joints of shoulder

Answer 12

sternoclavicular
acromioclavicular
glenohumeral

Question 13

Sternoclavicular joint

Answer 13

synovial

Question 14

Acromioclavicular joint

Answer 14

Synovial
Between medial surface of acromion and a facet on acromial end of clavicle
Supported by
small acromioclavicular ligament superior to joint
Much larger coracoclavicular ligament (between coracoid process and inferior surface of lateral end of clavicle)

Question 15

Coracoclavicular ligament

Answer 15

Anteriorly - trapezoid ligament (attach to trapezoid line)

Posteriorly - conoid ligament (attach to conoid tubercle)

Question 16

Glenohumeral joint

Answer 16

Synovial ball and socket

Joint stability - rotator cuff, long heads of biceps brachii

Question 17

Bursa of the glenohumeral joint

Answer 17

Subtendinous bursa of subscapularis

Subacromial bursa

Question 18

Fibrous membrane of joint capsule

Answer 18

attaches to margin of glenoid cavity, outside attachment of glenoid labrum and long head of biceps, and to the anatomical neck of humerus
Thickened in 3 locations - superior, middle and inferior glenohumeral ligaments
Coracohumeral ligament`
Transverse humeral ligament - holds tendon of long head of biceps in intertubercular sulcus

Question 19

Vascular supply to glenohumeral joint

Answer 19

Anterior and posterior circumflex humeral arteries

Suprascapular arteries

Question 20

Innervation of glenohumeral

Answer 20

Branches from posterior cord of brachial plexus
Suprascapular
Axillary
Lateral pectoral nerves

Question 21

Rhomboid minor and major

Answer 21

Dorsal scapular nerve
Elevates and retracts scapula
Holds scapula to the vertebrae

Question 22

Supraspinatus

Answer 22

Suprascapular nerve

Most superior facet of greater tubercle

Question 23

Infraspinatus

Answer 23

Middle facet of greater tubercle
Suprascapular nerve
Lateral rotation of arm

Question 24

Teres minor

Answer 24

Inferior facet of greater tubercle
Axillary nerve
Lateral rotation of arm

Question 25

Teres major

Answer 25

Origin: inferior angle of scapula (posterior)
Insertion: medial lip of intertubercular sulcus on anterior surface of humerus
Inferior subscapular nerve
Medial rotation and extension of arm

Question 26

Long head of triceps brachii

Answer 26

Origin: infraglenoid tubercle of scapula
Insertion: common tendon of insertion with medial and lateral heads on olecranon process of ulna
Radial nerve
Travels in between teres minor and major muscle

Question 27

Muscles in shoulder

Answer 27

Deltoid
Trapezius
Levator scapulae
Rhomboid major and minor

Question 28

Posterior scapular region

Answer 28

Supraspinatus
Infraspinatus
Teres minor and major
Long head of triceps brachii

Question 29

Gateways to posterior scapular region

Answer 29

Suprascapular foramen
Quadrangular space
Triangular space
Triangular interval

Question 30

Suprascapular foramen

Answer 30

Suprascapular nerve

Suprascapular artery and veins

Question 31

Quadrangular space

Answer 31

Borders:
Lateral margin of long head of triceps brachii
inferior margin of teres minor
superior margin of teres major
shaft of humerus laterally

Contents:
posterior circumflex humeral artery
axillary nerve

Question 32

Triangular space

Answer 32

borders:
medial margin of long head of triceps brachii
inferior margin or teres minor
superior margin of teres major

Contents:
circumflex scapular artery and nerve

Question 33

Triangular interval

Answer 33

Borders:
lateral margin of long head of triceps brachii
shaft of humerus laterally
inferior margin of teres major

Contents:
radial nerve
profunda brachii artery

Question 34

Suprascapular artery

Answer 34

branch of thyrocervical trunk (branch of subclavian artery)

Question 35

Subscapular artery

Answer 35

Originate from third part of axillary artery

Circumflex scapular artery branches from here

Question 36

Posterior circumflex humeral artery

Answer 36

Originates from third part of axillary artery