Elbow

Question 1

3 bones making up the elbow

Answer 1

• humerus
• radius
• ulna

Question 2

strength of elbow (skel, musc, ligs?)

Answer 2

• skel: moderate
• ligs: strong
• musc: strong

Question 3

bony landmarks on radius

Answer 3

• radial head

- radial tuberosity

Question 4

bony landmarks on ulna

Answer 4

• olecranon process
• trochlear notch: artics w/ trochlear on hum
• coronoid process: below trochlear notch
• radila notch: artics w/ radial head

Question 5

bony landmarks on humerus

Answer 5

• med/lat epicondyle
• capitulum: artics w/ radial head
• trochlear: med artics w/ trochlear notch
• olecranon fossa

Question 6

3 articulations of elbow

Answer 6

• humero-ulnar jt: trochlear/trochlear notch and olecranon fossa/process
• humero-radial jt: capitulum/radial head
• radial-ulnar jt: radial head/notch

Question 7

movements of elbow

Answer 7

• flex/extend

- pronate/supinate of radius and ulna

Question 8

ligaments of elbow on lateral side

Answer 8

• annular lig: radila head -> radial notch

- lateral collateral lig: lat epicondyle -> blends into annular lig (weak)

Question 9

ligaments of elbow on medial side

Answer 9

-medial collateral lig: 3 bands

Question 10

3 bands of medial collateral lig of elbow

Answer 10

• anterior: med epicondyle -> med aspect of coronoid process
• posterior: med epicondyle -> medial olecranon
  oblique: olecranon -> coronoid, not important for jnt stability

Question 11

origin of felxor carpi radialis

Answer 11

med epicondyl

Question 12

insertion of FCR

Answer 12

base of 2nd/3rd metacarp

Question 13

origin of FCU

Answer 13

med epicondly/upper ulna

Question 14

insertion of FCU

Answer 14

pisiform

Question 15

origin of palmaris longus

Answer 15

med epicondyle

Question 16

insertion of palmaris longus

Answer 16

transverse carpal lig

Question 17

action of FCR/FCU/palamris longus

Answer 17

-flex

Question 18

origin of pronator teres

Answer 18

med epicondly/ coronoid process

Question 19

insertion of pronator teres

Answer 19

mid radial shaft

Question 20

action of pronator teres

Answer 20

pronation

Question 21

origin of ECR/ECU/supinator

Answer 21

lat epicondyle

Question 22

insertion of ECR

Answer 22

2nd/3rd metacarp

Question 23

insertion of ECU

Answer 23

5th metacarp

Question 24

insertion of supinator

Answer 24

prox end of radial shaft

Question 25

actionf of ECU/ECR/supinator

Answer 25

- extend | supin: supnate

Question 26

8 injuries to elbow

Answer 26

- myositis ossification - fracture - dislocation - strain - sprain - injury to ulnar nerve - olecranon bursitis - supracondylar FX

Question 27

how to tell if elbow is dislocated

Answer 27

look for olecranon processa nd epicondyles and see if they line up

Question 28

how do you treat elow strain

Answer 28

- ice,ROM - gentle stretch - strengthen when pain free - surgery if necess

Question 29

what is lat/med epicondylitis

Answer 29

inflammination of bones

Question 30

valgus vs vargus stress

Answer 30

val: med stress = injury to lat side var: lat stress - injury to med side

Question 31

4 injuries to ulnar nerve

Answer 31

- contused by blow - stretched by valgus force - entrapped by scar tissue - irritated by bone spurs

Question 32

what is the mechanism of ollecranon bursitis

Answer 32

contusion

Question 33

what is the mechanims of supracondylar fx

Answer 33

falling on outstretched arm

Question 34

what does supracondylar fc lead to | -two

Answer 34

- dislocation in post = post deform | - volkmann ischemic contracture

Question 35

waht are we concerned about in a supracondylar fx

Answer 35

- growth plates here | - rapid sweeling can cause entrapment of nerves / blood vessels

Question 36

what is volkmann ischemic contracture (VIC)

Answer 36

- disturbance of blood and nerve transmition - useless limb = claw hand - wrist flex, MP jnt flexed, PIP/DIP flexed

Question 37

how do you treat VIC

Answer 37

- spint - ice - examine nerve and blood supply to hand and nail beds - immediate refferal