Shoulder Region Flashcards
what makes up the pectoral girdle?
scapula and clavicle
what is the notch on the top of the scapula?
suprascapular notch
what ligament runs across the top of the suprascapular notch?
transverse scapular ligament
what runs through the hole created by the suprascapular notch and transverse scapular ligament?
suprascapular nerve
what goes over the suprascapular foramen?
suprascapular artery
which acromion variation is most common?
curved
which acromion variation is least common?
convex
which acromion variation is associated with shoulder impingement?
hooked
what articulates with the head of the radius?
capitulum
what muscle attaches to the tuberosity of the ulna?
brachialis
what muscle attaches to supinator crest and fossa?
supinator
how many carpal bones are there?
8 bones in 2 rows of 4
how many metacarpals are there?
5
how many phalanges are there?
14 total
5 proximal
5 distal
4 middle
which carpal bone is on the thumb edge of the first roq
scaphoid
which is more proximal, the head or base of the metacarpals?
base
6 scapulohumeral muscles (intrinsic)
- deltoid
- supraspinatus
- infraspinatus
- teres major
- teres minor
- subscapularis
deltoid origin
clavicular = anterior border of lateral 1/3 clavicle
acromion = lateral margin of acromion
scapular = crest of spine of scapula
deltoid insertion
deltoid tuberosity of humerus
supraspinatus origin
medial 2/3 of supraspinous process of scapula
supraspinatus insertion
superior facet on greater tubercle of humerus
infraspinatus origin
medial 2/3 of infraspinous process of scapula
infraspinatus insertion
middle facet on posterior side of greater tubercle of humerus
teres major origin
posterior surface of inferior angle of scapula
teres major insertion
medial lip of intertubercular sulcus of humerus
teres minor origin
posterior surface of scapula, adjacent to lateral border
teres minor insertion
inferior facet on posterior surface of greater tubercle of humerus
subscapularis origin
medial 2/3 scapular fossa
subscapularis insertion
lesser tubercle of humerus
which scapulohumeral muscle inserts on the lesser tubercle of humerus?
subscapularis
which scapulohumeral muscle inserts on the intertibercular sulcus of the humerus?
teres major
clavicular deltoid action
medial rotation of arm
subscapularis action
medial rotation of arm
which muscles medially rotate the arm?
- clavicular deltoid
- subscapularis
acromion deltoid action
ABduction of arm
supraspinatus action
ABduction of arm (starts)
infraspinatus action
lateral rotation of arm
teres minor action
lateral rotation of arm
scapular deltoid action
lateral rotation of arm
which muscles laterally rotate the arm
- infraspinatus
- teres minor
- scapular deltoid
teres major action
ADduction of arm
which muscle(s) ADDuct the arm?
teres major
which muscles ABduct the arm?
- acromion deltoid
- supraspinatus
teres minor innervation
axillary nerve
deltoid innervation
axillary nerve
subscapularis innervation
- upper subscapular nerve
- lower subscapular nerve
teres major innervation
lower subscapular nerve
supraspinatus innervation
suprascapular nerve
infraspinatus innervation
suprascapular nerve
what muscles is innervated by axillary nerve?
- teres minor
- deltoid
what muscle is innervated by upper subscapular nerve?
subscapularis
what muscle is innervated by lower subscapular nerve?
- subscapularis
- teres major
what muscle is innervated by suprascapular nerve
- supraspinatus
- infraspinatus
what muscle is being tested when apply resistance to arm abducting more than 15*?
deltoid
what muscle is being tested when applying resistance to arm abducting from starting position?
supraspinatius
what muscle is being tested when resistance to Adduction is being applied when arm is ABducted?
teres major
what muscle is being tested when resistance to lateral rotation is being applied when the elbow is flexed and arm is Adducted?
infraspinatus
what muscle is being tested when resistance to medial rotation is being applied when elbow is flexed and arm is adducted?
subscapularis
what muscle is being tested when resistance to lateral rotation is applied when elbow is flexed and arm is 90* in scapular plane?
teres minor (horn blower test)
what fracture in elderly with osteoporosis?
surgical neck fracture
what fracture from direct blow to the arm?
transverse fracture of shaft
what nerve with a surgical neck fracture?
axillary nerve
what nerve with a radial groove fracture?
radial nerve
what nerve with medial epicondyle fracture?
ulnar nerve
what nerve with distal humerus fracture?
median nerve
most common rotator cuff injury muscle
supraspinatus