shoulder bones

Question 1

the bones making up the shoulder complex

Answer 1

sternum, scapula, clavicle, humerus (proximal to midpart)

Question 2

the true joints of shoulder complex

Answer 2

• sternoclavicular joint (sc jt)
• acromioclavicular joint (ac jt)
• glenohumeral joint (gh jt)

Question 3

false/functional joints of shoulder complex

Answer 3

• scapulothoracic joint (st jt)
• subacromial/suprahumeral joint
• bicipital/intertubercular sulcus

Question 4

muscles of the shoulder concept (divisions muna)

Answer 4

• muscles connecting UE to thoracic wall
• muscles connecting UE to vertebral column
• muscles connecting scapula to humerus
• muscles of the arm

Question 5

t shaped vertical bone that forms the anterior portion of the chest wall centrally

Answer 5

sternum

Question 6

forms part of the bony framework of neck and thorax

Answer 6

manubrium

Question 7

pair of oval shaped found at manubrium which articulate w clavicle

Answer 7

clavicular facets

Question 8

located at lateral edge of the manubrium, attachments for first two ribs

Answer 8

costal facets

Question 9

located at the superior aspect of manubrium between clavicular facets

Answer 9

jugular notch/suprasternal notch

Question 10

angle formed between the manubrium and body of sternum (manubriosternal junction)

Answer 10

sternal angle/angle of louis

Question 11

largest part of sternum

Answer 11

body of sternum

Question 12

the articulation that connects the xiphoid process with the body of the sternum

Answer 12

xiphisternal joint

Question 13

most inferior and smallest part of sternum. with it’s tip located at t10

Answer 13

xiphoid process

Question 14

strut or collar bone. the only attachment between trunk and UE. most fractured bone at middle to lateral thirds where the curvature changes)

s shaped bone that lies horizontally in the superior and anterior part of thorax superior to the 1st rib

Answer 14

clavicle

Question 15

medial 2/3 of clavicle; lateral third

Answer 15

convex; concave

Question 16

directed medially and a little downwards and forwards, to articulate with clavicular notch of the manubrium

it is usually irregular and pitted, is quadrangular (sometimes triangular)

Answer 16

sternal end of clavicle

Question 17

broad, flat, lateral end, articulates with acromion of scapula

Answer 17

acromial end

Question 18

roughned oval impression near the inferior surface, near the sternal end; lies on inferior surface

Answer 18

impression for costoclavicular ligament

Question 19

shallow depression found on the middle one third of the inferior surface of the clavicle

Answer 19

groove for subclavius muscle

Question 20

lies on the inferior surface, close to posterior border. attachment of the conoid ligament of the coracoclavicular ligament

Answer 20

conoid tubercle

Question 21

a narrow, roughened strip. runs forward and laterally from the lateral side of conoid tubercle, almost as far as the acromial end

Answer 21

trapezoid line

Question 22

significance if sternal end of clavicle

Answer 22

the upper most part is slightly roughened for attachment of interclavicular ligament, sternoclavicular capsule and articular disc

Question 23

significance of impression for the costoclavicular ligament

Answer 23

costoclavicular ligament connects the clavicle to the upper surface of the first rib and its cartilage

Question 24

significance of groove for subclavius muscle

Answer 24

attachment for subclavius muscle

Question 25

significance of conoid tubercle

Answer 25

attachment for conoid part of coracoclavicular ligament

Question 26

significance of the trapezoid line

Answer 26

attachment of trapezoid part of coracoclavicular ligament

Question 27

a large, flat, triangular bone which lies on the posterolateral aspect of chest wall, covering parts of 2nd to 7th ribs shoulder blade

Answer 27

scapula

Question 28

angles of scapula

Answer 28

superior, inferior, lateral angle

Question 29

angle located at the junction of the superior and medial border (T2)

Answer 29

superior angle

Question 30

angle marked by shallow glenoid cavity

Answer 30

lateral angle

Question 31

angle that lies over the 7th rib, or over the 7th intercostals space (T7)

Answer 31

inferior angle

Question 32

significance of superior angle of scapula

Answer 32

separates the attachments of subscapularis and teres minor and major

Question 33

significance of lateral angle

Answer 33

attachment for rhomboids major, minor, levator scapula

Question 34

significance of inferior angle

Answer 34

gives origin to the inferior belly of omohyoid

Question 35

this border runs from the inferior angle to the lateral angle of the scapula

Answer 35

lateral (axillary) border

Question 36

border approx 2 inches from the spinous process of the thoracic vertebra; extends from the inferior to the superior angle

Answer 36

medial border (vertebral)

Question 37

border that is thin, sharp, and shortest. at its anterolateral end, it is separated from the root of the coracoids process by the suprascapular notch

Answer 37

superior border

Question 38

slightly concave; tilted upwardly about 5 degrees relative temperature the scapular medial border, which articulates with the humeral head to form GH joint

Answer 38

glenoid fossa

Question 39

found at the posterior surface of the scapula, located superior to the spine of scapula

Answer 39

supraspinous/supraspinatus fossa

Question 40

found at the posterior surface of the scapula, inferior to the spine of scapula

Answer 40

infraspinous fossa

Question 41

shallow convcavity found at the anterior surface of scapula

Answer 41

subscapular fossa

Question 42

a less distinct tubercle located superior to glenoid cavity

Answer 42

supraglenoid tubercle

Question 43

large triangular tubercle located inferior to glenoid fossa

Answer 43

infraglenoid tubercle

Question 44

an anterolateral projection of the spine, arches over gh jointband articulates w clavicle shoulder’s summit

Answer 44

acromion process

Question 45

a hook like structure that projects anterolaterally and is positioned directly inferior to the lateral part of clavicle

Answer 45

coracoid process

Question 46

projection on the upper part of the dorsal surface of scapula; corresponds to T3 vetebral level

Answer 46

spine of scapula

Question 47

small but distinct, lies immediately medial to the root of coracoid process

Answer 47

suprascapular notch

Question 48

the region between the lateral angle of the scapula and the attachment of spine to the posterior surface of scapula

Answer 48

spinoglenoid notch

Question 49

the longest at largest bone in the upper limb

Answer 49

humerus (prox to midpart)

Question 50

forms less than half of a spheroid, faces medially and superiorly

Answer 50

humeral head

Question 51

significance of humeral head

Answer 51

articulate w the much smaller glenoid cavity of scapula

Question 52

neck that is very short and is formed by a narrow constriction immediately distal to the head; lies between the head and greater and lesser tubercles, laterally between the head and the shaft more medially

Answer 52

anatomical neck of humerus

Question 53

neck that is a constriction in the humerus just distal to tubercles, where the head tapers to the shaft; named bc of fracture often happen here

Answer 53

surgical neck

Question 54

significance of surgical neck

Answer 54

weaker than proximal regions of the humerus. one of the sites if humeral fracture. axillary nerve can be damaged by fractures of this region

Question 55

large rounded prominent landmark on proximal end of the humerus. lateral in position, has three large smooth facets for mm tendon attachment

Answer 55

greater tubercle

Question 56

tubercle that projects anteriorly

Answer 56

lesser tubercle

Question 57

significance of greater tubercle

Answer 57

- superior facet: attachment of supraspinatus - middle facet: attachment of infraspinatus - inferior facet: attachment of teres minor

Question 58

significance of lesser tubercle

Answer 58

attachment of subscapularis

Question 59

separates the lesser and greater tubercles and continues inferiorly onto the proximal shaft of the humerus

Answer 59

intertubercular groove (bicipital groove/sulcus); parts: medial lip, lateral lip, floor

Question 60

significance of bicipital sulcus

Answer 60

tendon of long head of biceps brachii passes thru this medial lip: teres major attachment lateral lip: pecs major attachment floor: latissimus dorsi

Question 61

continuous inferiorly from the lateral lip of bicipital groove, V shaped, located on the lateral surface of the humerus

Answer 61

deltoid tuberosity

Question 62

significance of deltoid tuberosity

Answer 62

attachment of deltoid muscle

Question 63

passes diagonally down the humerus and parallel to the sloping posterior margin of deltoid tuberosity process

Answer 63

spiral/radial groove

Question 64

significance of radial groove

Answer 64

accommodates the radial nerve