MSK 07 - Shoulder and elbow

Question 1

what are the 4 ligaments of the shoulder capsule

Answer 1

coracohumeral ligament

coracoacromial ligament

transverse humeral ligament

glenohumeral ligaments (x3)

Question 2

what forms the roof of the intertrabecular groove

Answer 2

transverse humeral ligament

Question 3

what are the 4 bursa of the shoulder

Answer 3

subacromial

subdeltoid

subcoracoid

subscapular

Question 4

what is the synovial membrane structure around the long head of bicep brachii

Answer 4

sacciform synovial membrane

Question 5

what are the 4 rotator cuff muscles

Answer 5

teres minor

subscapularis

infraspinatus

supraspinatus

Question 6

what is origin and insertion of subscapularis

Answer 6

origin = subscapular fossa
insertion = lesser tubercle

Question 7

what is origin and insertion of supraspinatus

Answer 7

origin = supraspinatus fossa

insertion = great tubercle (superior facet)

Question 8

what is origin and insertion of infraspinatus

Answer 8

origin = infraspinatus fossa

insertion = greater tubercle (middle facet)

Question 9

what is origin and insertion of teres minor

Answer 9

origin = lateral border scapular

insertion = greater tubercle (inferior facet)

Question 10

what nerve innervates the subscapularis muscle

Answer 10

upper and lower subscapular nerve

Question 11

what nerve innervates the supraspinatus muscle

Answer 11

suprascapular nerve

Question 12

what nerve innervates the infraspinatus muscle

Answer 12

suprascapular nerve

Question 13

what nerve innervates the teres minor muscle

Answer 13

axillary nerve

Question 14

what is the action of the subscapularis

Answer 14

internally rotates arm

Question 15

what is the action of the supraspinatus

Answer 15

abduct arm

Question 16

what is the action of the infraspinatus

Answer 16

externally rotate arm

Question 17

what is the action of teres minor

Answer 17

externally rotate arm

Question 18

which of the three elbow joints are responsible for flexion and extension and which are responsible for pronation/supination

Answer 18

flexion/extension = humeral ulna joint and humeral radial joint

supination/pronation = humeral radial joint and ulna radial joint

Question 19

what area of the ulna bone articulates with the radial head

Answer 19

radial notch

Question 20

what are the 3 ligaments of the elbow

Answer 20

ulnar and radial collateral ligaments and annular ligament

Question 21

what are the 2 arm abductors

Answer 21

supraspinatus

middle part of deltoid

Question 22

what are the 7 arm adductors

Answer 22

posterior deltoid

anterior deltoid

pectoralis major

long head of triceps

coracobrachialis

teres major

latissimus dorsi

Question 23

what are the 4 arm flexors

Answer 23

anterior deltoid

clavicular head of pectoralis major

coracobrachialis

bicep brachii

Question 24

what are the 5 arm extensors

Answer 24

posterior deltoid

teres minor

latissimus dorsi

long head triceps

sternocostal portion of pectoralis major

Question 25

what are the 4 internal arm rotators

Answer 25

pectoralis major

anterior deltoid

latissimus dorsi

teres major

Question 26

what are the 3 external arm rotators

Answer 26

posterior deltoid

infraspinatus

teres minor