Bony Landmarks MD3

Question 1

Scapula

Answer 1

acromion, coracoid process, spine of scapula, scapular notch, supraspinous & infraspinous fossa, glenoid fossa, supraglenoid tubercle (origin for biceps brachii), infraglenoid tubercle (origin for long head of triceps)

Question 2

Humerus

Answer 2

Humeral head, intertubercular/bicipital groove (latissimus dorsi inserts in the floor of the groove), Greater tubercle (inferior facet is insertion for teres minor, middle facet is insertion of infraspinatus, superior facet is insertion of supraspinatus), Lesser tubercle (insertion of subscapularis), surgical neck (more often fractured), anatomical neck, spiral/radial groove (houses radial nerve & deep brachial artery), deltoid tuberosity (insertion of deltoids)

Question 3

Humerus

Answer 3

medial & lateral epicondyles

capitulum- distal humerus, lateral, small articulation to head of radius

trochlea- distal humerus, medial, articulates w/ trochlear notch on ulna

olecranon fossa- distal humerus, posterior aspect, depression that accomodates olecranon of ulna during extension of elbow

Question 4

Carpal Bones

Answer 4

(Lateral to medial, proximal to distal)

scaphoid, lunate, triquetrum, pisiform (on top of triquetrum), trapezium (thumb), trapezoid, capitate, hamate (hook)

Some Lovers Try Positions That They Can’t Handle

Question 5

Radius

Answer 5

shorter of two forearm bones, lateral side of elbow to thumb side of wrist

head articulates w/ capitulum of humerus & radial notch of ulna proximally

radial neck

upper 1/3: supinator, flexor digitorum superficialis (via anterior oblique line), flexor pollicis longus

middle 1/3: pronator teres

lower 1/3: pronator quadratus

radial/bicipital tuberosity: attachment of biceps tendon

articulates w/ ulna, scaphoid & lunate carpal bones distally

styloid process: insertion of brachioradialis,

Question 6

Ulna

Answer 6

larger of two forearm bones, medial (pinky side)

bigger proximally (radius bigger distally)

olecranon & coronoid process form trochlear notch for articulation w/ trochlea of humerus proximally

head of ulna articulates w/ ulnar notch on radius distally

ulna does not extend to wrist

Question 7

Metacarpals

Answer 7

I-V

Question 8

Phalanges

Answer 8

proximal, middle, distal (except for thumb, which is just proximal & distal)

Question 9

Interphalangeal joints

Answer 9

proximal interphalangeal joint (PIP)

-b/w proximal & middle

distal interphalangeal joint (DIP)

-b/w middle & distal

*except thumb, which only has one IP joint

*also remember the carpometacarpal & metacarpophalangeal (knuckle) joints (CMC, MCP)

Question 10

Tarsal Bones

Answer 10

• Calcaneus (heel), Talus, Navicular, Cuboid, Lateral Cuneiform, Intermediate Cuneiform, Medial Cuneiform
• Many Intermediate Lovers Can’t Navigate The Clitoris

(medial, intermediate, lateral cuneiforms, cuboid, navicular, talus, calcaneus)

-sustentaculum tali- medial side of calcaneus, harry runs underneath, attachment of spring ligament

Question 11

Metatarsals & Phalanges

Answer 11

2-5 have middle phalanges (not great toe), all have proximal & distal phalanges

Question 12

Sesamoid bone on great toe

Answer 12

ball of foot,

acts as a lever for flexor hallucis longus,

no ligamentous attachment (tucked under FHL),

fx d/t repetitive force (soccer)