elbow - structure, function, anatomy Flashcards Preview

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Flashcards in elbow - structure, function, anatomy Deck (37)
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1
Q

ulna articulates with

A

trochlea

2
Q

motion at radioulnar joint?

A

pron/sup

3
Q

motion at humeralradial joint

A

pron sup flex ext

4
Q

motion at humeralulnar joint

A

flex ext

5
Q

what is carrying angle

A

angle of the ulna in relation to the humeral shaft

6
Q

borders of cubital triangle

A

pronator teres, brachioradialis

7
Q

what lies in the cubital fossa (triangle)

A

brachial artery, median nerve, musculotaneous

8
Q

purpose of the radial head

A

gliding, rotation, enhances stability

9
Q

Anterior band of the anterior UCL resists what motion?

A

valgus forces till 90 degrees of flexion

10
Q

Posteior band of the anterior UCl resists what motion?

A

valgus force beyond 60 degrees

11
Q

posterior bundle taut during

A

flexion above 90 degrees

12
Q

annular ligament resists

A

internal rotation

13
Q

interosseus membrane stabilizes against

A

axial force applied to the wrist

14
Q

brachiale is a prime flexor in

A

pronation

15
Q

median nerve innervates

A

wrist flexors and pronators

runs through cubital fossa

16
Q

ulnar nerve innervates what structures

A

sensory and motor innovators of the hand

runs through arcade of struthers, medial side of elbow, past hook of hanmate, tunnel of guyon.

17
Q

radial nerve innervates

A

motor control - wrist extensors and supinators

posterior aspect of humerus, crosses over to lateral aspect of elbow

18
Q

Dermatomes

A

look em up

19
Q

look at special tests!

A

now

20
Q

flex/ext - plane and axis

A

sagital plane, coronal axis

21
Q

pron/sup plane and axis

A

transverse plane, longitudinal axis

22
Q

MOI elbow dislocation

A

Foosh, landing on immovable oject, axial force through arm with slight flexion

23
Q

Elbow terrible triad

A

posterior dislocation, fracture of radial head, fracture of coronoid

24
Q

MOI elbow fractures

A

fall on flexed elbow, hyperextension

25
Q

radial head fracture MOI

A

foosh

26
Q

elbow sprain MOI

A

strain placed on ligaments with a flexed elbow

27
Q

UCL MOI

A

stress secondary to valgus over loading, force delivered to lateral elbow

28
Q

Biceps tendon rupture

A

males over 40, smokers, eccentric loading of the biceps when elbow is flexed to 90

29
Q

OCD’s of the capitellum

A

compression, valgus extension overload, throwing

30
Q

numbness on dorsal hand

A

compression of ulnar nerve at elebow

31
Q

numbness on palmar hand

A

compression of ulnar nerve at wrist

32
Q

Radial nerve MOI

A

deep lacerations

33
Q

test radial nerve with

A

tinel’s sign

34
Q

carpal tunnel syndrom

A

median nerve

35
Q

pronator teres syndrom

A

median nereve

36
Q

volkmann’s contracture

A

compartment syndrome

37
Q

valgus extension overlaod

A

attenuation of the anterior band of the UCL

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