Anatomy Flashcards
Origins on Coracoid Process
Biceps brachii; short head
Coracobrachialis
Insertions on Coracoid Process
Pectoralis Minor
Insertions on Greater Tuberosity on Humerus
Supraspinatus
Infraspinatus
Teres Minor
Insertions on Lesser Tuberosity of Humerus
Subscapularis
Insertions on anterior proximal Humerus
Pectoralis Major
Teres Major
Latissimus Dorsi
Origins on medial epicondyle of Humerus
Pronator Teres
Common flexor tendon; FCR, PL, FCU, FDS
Origins on lateral epicondyle of Humerus
Anconeus
Common extensor tendon; ECRB, EDC, EDQ, ECU
Coracobrachialis
O: coracoid process I: middle humerus N: musculocutaneous A: flex and adduct arm Part of conjoined tendon Musculocutaneous nerve pierces 6-8cm distal to coracoid process
SC joint
Sternoclavicular joint uncommon site of info or dislocate
Clavicle
subcutaneous bone, most common bone to fx
AC joint
acromioclavicular joint common site for shoulder separation or DJD/pain
Acromion
landmark for shoulder…think injection/scope
deltoid mm
can test mm function for axillary nerve motor function
Trapezius
common site of pain, weakness/palsy = lateral winging
Serratus anterior
weakness/palsy = medial winging
Pectoralis major
rupture at humeral insertion => axillary fold defect
cephalic vein
lies in deltopectoral fold
Scapular spine
suprascapular nerve palsy => infra/supraspinatus mm wasting ==> spine becomes more prominent
Inferior angle of scapula
portion thats wings w/ palsy
suprascapular nerve compressed in suprascapular notch
SS and IS affected
suprascapular nerve compressed in spinoglenoid notch
IS affected
glenoid orientation
pear shaped, 5-7 degrees retroverted, 5 degrees superior tilt
unfused acromion =>
os acromiale
humeral head orientation
retroverted 35 degrees
humerus anatomic neck
may result in osteonecrosis
humerus surgical neck
common fx site in elderly
humerus head/neck angle
130 degrees
humerus bone growth
80% from proximal physis
bicep tendon
in bicipital groove between gtr and lsr tuberosity
clavicle facts
S shaped cylindrical bone middle 1/3 narrowest w/o mm insertions widens laterally no true medullary canal only link from UE to axial skeleton most common fx; middle 1/3 1st to ossify, last to fuse