Elbow A

Question 1

What boney structure resists valgus stress at the elbow

Answer 1

radial head

Question 2

The Proximal radio ulnar joint optimal motion consists of ________ pronation and ______ of supination

Answer 2

70 of pronation
80 of supination

Question 3

the radius head is __________ on a _________ capitulum (humerus)

Answer 3

Concave radius on convex humerus

Question 4

What is the functional ROM for the elbow

Answer 4

30-130

Question 5

What is the capsular pattern of the elbow

Answer 5

Flexion lost before extension

Question 6

What is the open packed position of the humero-ulnar joint

Answer 6

70 flexion, 10 supination

Question 7

What is the close packed position of the humero-ulnar joint

Answer 7

full ext + full supination

Question 8

What is a normal carrying angle?

Answer 8

Males: 11-14
Females: 13-16

Question 9

Varus deformities of the elbow indicate what?

Answer 9

Past fracture (gunstock deformity)

Question 10

What is the open packed position of the humero-radial joint

Answer 10

full extension + full supination

Question 11

what is the close packed position of the humero-radial joint

Answer 11

90 degrees flexion + 5 supination

Question 12

What is the open packed position of the proximal radio-ulnar joint

Answer 12

70 flexion and 35 supination

Question 13

What forms 80% of the articular surface of the proximal radio-ulnar joint

Answer 13

annular ligament

Question 14

What is the open packed position of the distal radio-ulnar?

close packed?

Answer 14

open packed: 10 supination

close packed: 5 supination

Question 15

You weight bear through your _______
You transfer force through

Answer 15

Radio-carpal joint to the
Ulnar Humeral joint
( through the Interosseous Membrane )

Question 16

The elbow joint capsule is taught in full _______

Answer 16

Extension

Question 17

The joint capsule has great extensibility between ______-_______

Answer 17

70-90 degrees of flexion

Question 18

_________ deformities indicate prior damage

Answer 18

Varus
( Gun stuck deformity)

Question 19

The posterior interosseus nerve innervates
(8 muscles)

Answer 19

Supinator
ECRB, ECU,ED,EI,EDM,EPB, APL

Question 20

how does the elbow joint capsule respond to injury

Answer 20

does not response well, will form thick scar tissue

these patients need to get moving ASAP

bc everything shares the same joint capsule, when one joint is affected they all are!

Question 21

The UCl is made up of

Answer 21

Anterior Component
Oblique Component
Posterior Component

Question 22

What is important about the Posterior band of the UCL ?

Answer 22

Thinner weaker than anterior bundle
Taut b/t 60-90 flex

Question 23

What is the strongest and stiffest elbow ligament

Answer 23

the anterior band of the UCL

Question 24

When is the anterior band of the UCL taut

When is the LCL taut?

Answer 24

taut throughout motion

taut in full supination

Question 25

What muscles are part of the elbow muscles

Answer 25

Bicep Brachii Brachialis Brachioradialis

Question 26

What elbow muscles that are posterior or responsible for extension

Answer 26

Triceps Brachii Anconeus

Question 27

What muscles make up the posterior forearm muscle groups?

Answer 27

Supinator ECRL,ECRB ED,EDM EI,ECU,APL

Question 28

What muscles make up the anterior forearm muscle groups?

Answer 28

Pronator Teres Pronator Quadratus FCR, FCU, FDS, FDP, PL

Question 29

The cubital tunnel has _________ volume in extension _______ in full elbow fleixon

Answer 29

increased volume in extension decreased volume in flexion

Question 30

What nerve goes through the cubital tunnel ?

Answer 30

Ulnar N

Question 31

What are the borders of the Cubital tunnel?

Answer 31

Floor UCL Roof Aponeurosis Posterior Medial head of triceps Anterior Medial Epicondyle Lateral Olecranon

Question 32

The Anterior interosseous nerve comes from what

Answer 32

Median N

Question 33

The anterior interosseous nerve goes through what tunnel ?

Answer 33

Carpal Tunnel

Question 34

What muscles are innervated by the median nerve ?

Answer 34

PT FCR FCU FDS 1/2 FDP

Question 35

The posterior interosseus nerve comes from what

Answer 35

Radial N

Question 37

What is considered functional pronation/supination?

Answer 37

50/50

Question 38

flex/ext and pron/sup are _________(relationship)

Answer 38

interdependent, if one is limited, the other will be too

Question 39

T or F: The anterior portion of the UCL resists both valgus and varus stress

Answer 39

T

Question 40

Tricep nerve: Bicep/Brachialis nerve:

Answer 40

Radial Musculocutaneous

Question 41

Supinator innervation:

Answer 41

Radial PIN C5-C6

Question 42

Pronator Quadratus Innervation:

Answer 42

Median AIN C8 T1

Question 43

Pronator Teres and Flexor Carpi Radialis Innervation:

Answer 43

Median C6-C7

Question 44

Extensor Carpi Radialis Longus innervation

Answer 44

Radial

Question 45

ECRB innervation innervation

Answer 45

Radial PIN C7-C8

Question 46

Extensor Carpi Ulnaris innervation

Answer 46

Radial PIN C7 C8

Question 47

Abductor and extensor pollicus longus innervation

Answer 47

Radial PIN C7 C8

Question 48

Extensor Digitorum and Extensor Indicis innervation

Answer 48

Radial PIN C7-C8

Question 49

EDM innervation

Answer 49

Radial PIN c7 c8

Question 50

Flexor digitorum superficialis innervation

Answer 50

median C7 C8 T1

Question 51

FDP innervation

Answer 51

Digit 4-5: Ulnar Digit 2-3: Median

Question 52

What are the contents of the cubital fossa?

Answer 52

distal biceps tendon, median n brachial artery radial n., medial cubital cutaneous vein

Question 53

Borders of the cubital fossa:

Answer 53

**Lateral** – brachioradialis, ECRL **Medial** – PT **Proximal** – imaginary line that passes through humeral condyles **Floor** – brachialis

Question 54

Medial elbow tendinopathy can cause neuritis of what nerve? What would be weak?

Answer 54

Median flexors and pronators