Upper Limbs Anatomy (copy)

Anatomy

humeral head

right angle separating head and shaft

surgical neck

lesser tubercle

lateral, flatter projection, more bone than lesser

greater tubercle

groove between lesser and greater tubercle
anterior, bicep muscle attachment

intertubercular groove

posterior lateral crest, below greater tubercle

deltoid tuberosity

posterior, allows extension of arm

olecranon fossa

larger hole, medial anterior
attaches to trochlea

coronoid fossa

under coronoid fossa, concavity

trochlea

under radial fossa, convex

capitulum

small projection

lateral epicondyle

large projection

medial epicondyle

crest comes out farther

lateral supracondylar crest

THUMB
lateral
loose attachment
bows outward slightly

radius

proximal, flattish concave disc

radial head

constriction below neck

radial neck

projection below neck (medial)
whatever direction the projection leans towards shows left and right radius

radial tuberosity

super sharp projection, points up to thumb, lateral
the side the process is on shows left/right radius

styloid process of radius

ulna

articulates with the olecranon fossa
head

olecranon process

inner "beak" of ulna

trochlear notch

convex side shows left/right ulna

guiding ridge

articulates with coronoid fossa

coronoid process

lil numb on pinky side of wrist
posterior
processes are pokey

styloid process of ulna

humerus

generally smooth superior surface

clavicle

round, medial

sternal end

lateral, flattened and thinned

acromial end

thinnest, flattest bone post-cranium
side is same as where most of the processes are

scapula

top edge of wing

superior border

anterior, smaller process

coracoid process

entire anterior depression

subscapular fossa

teardrop depression that articulates with arm
tip of teardrop points to left/right side where its from

glenoid fossa

posterior line horizontal, connecting to largest process

scapular spine

largest process on scapula

acromial process

lateral border (Axillary)

convex line
major muscle attachment site, sturdier than lateral border

medial border

above scapular spine

supraspinous fossa

below scapular spine

infraspinous fossa

top corner of scapula opposite of glenoid fossa

superior angle

banana boat, two facets pinching the sides
sticks out on top where bone is from

scaphoid

with crescent facing you, top angles down to side bone is from, flat bit under crescent you can rest your thumb on

lunate

3 facets
flat base, process points down and to the side its from

triquetral

slightly concave side, so tiny
don't need to know side

pisiform

greater multangular
little spine
2 facets pinch together with process in between\
process leans to side its from

trapezium

lesser multangular
boot
look at roughened side, toe box of boot points to side bone is from

trapezoid

round ball on one end
largest carpal
continuous facet on side the bone is from

capitate

most identifiable carpal by feel

hamate

hook on end of hamate

hamulus

1-5, 2 each
thumb is 1, pinky is 5
flat side is dorsal (nothing there)
metacarpals end before palm ends
MC1: saddle base, long end is on side bone is from, top has extension on side bone is from
MC2: W base (2 styloid processes), extension on base where bone is from, big facet on base laterally, not much bone medially
MC3: one styloid process, top left corner on base shows side, OR flip to palmer side and styloid process is on same side bone is from, largest process on top on same side bone is from
MC4: one facet towards pinky, 2 facets toward middle finger, square, flat base
MC5: only one facet towards ring finger, no facet on other side

metacarpals (MC)

phalanges

Blue highlighted

Head of ulna