Elbow And Extensor Forearm

Front 1

Elbow

Back 1

Joint at which the ulna and radius articulate with the humerus

Front 2

3 joints of the elbow (all in a single joint capsule)

Back 2

1. Humeroulnar
2. Humeroradial
3. Proximal radioulnar

Front 3

Which elbow joint contributes most to flexion and extension

Back 3

Humeroulnar

Front 4

What type of joint is the humeroular joint and what parts make it up?

Back 4

Hinge joint; Trochlear notch of ulna and trochlea of humerus

Front 5

Humeroradial articulation allows for

Back 5

Flexion/extension

Front 6

Proximal radioulnar joint allows for

Back 6

Pronation and supination

Front 7

Radial head movement in pro/supination
-Humeral component
-Ulnar component

Back 7

-Pivots on humeral capitulum
-Articulates with radial notch of ulna

Front 8

Articular surfaces are covered by:

Back 8

Hyaline cartilage

Front 9

Features of distal humerus facilitating movement of elbow
Anterior surface (3)
Posterior surface (1)

Back 9

Anterior surface
1. Coronoid fossa
2. Radial fossa
3. Trochlear notch
Posterior surface
1. Olecranon fossa

Front 10

Synovial membrane lines:

Back 10

The deep surface of joint capsule

Front 11

Thickness of joint capsule on elbow
-Anterior (cubital) and Posterior surface
-Lateral and Medial surface

Back 11

-Thin
-Thicker

Front 12

Integrity of elbow structure

Back 12

Very sound

Front 13

Ulnar collateral ligament location

Back 13

Medial side

Front 14

Radial collateral ligament location

Back 14

Lateral side

Front 15

-Annular ligament location
-Function

Back 15

-Around head of radius; blended with radial collateral
-Aids in pronation/supination

Front 16

Which ligament is triangular in shape?

Back 16

Ulnar collateral

Front 17

Function of collateral ligaments of elbow

Back 17

Add strength to hinge function

Front 18

What gives elbow joint strength

Back 18

Collateral ligaments

Front 19

Fat pad location

Back 19

Outside synovial membrane but within the capsule

Front 20

Result of bursitis

Back 20

Large swelling because of loose skin

Front 21

Innervation of elbow joint (2 or 3)

Back 21

Musculocutaneous
Radial

Ulnar

Front 22

Which styloid process (radial/ulnar) projects more distally

Back 22

Radial

Front 23

What divides the forearm into anterior and posterior compartments

Back 23

Interosseous membrane

Front 24

Which bone is the stabilizing bone of the forearm

Back 24

Ulna

Front 25

Which bone is big proximally and smaller distally

Back 25

Ulna

Front 26

Which bone is wide distally and smaller proximally

Back 26

Radius

Front 27

Which bone of forearm articulates with the wrist bones

Back 27

Radius

Front 28

Blood supply to elbow joint is via _____; which arises from

Back 28

Anastomoses; branches of brachial a. & recurrent radial and ulnar a.

Front 29

Innervation of hand
-Digit 1
-Digits 2, 3, 4.5
-Digits 4.5 & 5

Back 29

-Radial n
-Median n
-Ulnar n

Front 30

Reason for dermatomes

Back 30

As limb bud extends, carries nerves with it

Front 31

Compartments of forearm
1.
2.
3.

Back 31

1. Anterior (volar)
2. Dorsal
3. Medial (Mobile wad)

Front 32

Medial Compartment (Mobile wad) contains what muscles

Back 32

Extensor carpi radialis brevis & longus & brachioradials

Front 33

Anterior (Volar) Compartment contains
-Muscles
-Nerves
-Innervation

Back 33

-Flexor and pronator muscles
-Median and ulnar .
-Ulnar and radial a.

Front 34

Dorsal compartment contains
-Muscles
-Nerves
-Arteries

Back 34

-Extensors
-Interosseous n., radial
-Posterior interosseous a.

Front 35

The 4 "3" groups of extensor muscles

Back 35

1. 3 to digits
2. 3 to wrists
3. 3 to thumb
4. 3 to other

Front 36

3 extensors to digits

Back 36

1. Extensor digitorum (2-5)
2. Extensor digiti minimi (5)
3. Extensor indices (2)

Front 37

3 extensors to wrists

Back 37

1. Extensor carpi radialis longus
2. Extensor carpi radialis brevis
3. Extensor ulnaris

Front 38

3 extensors to thumb

Back 38

1. Extensor pollicis brevis
2.Extensor pollicis longus
3. ABductur pollicis brevis

Front 39

3 extensors to other

Back 39

1. Anconeous
2. Supinator
3. Brachioradialis

Front 40

Extensor retinaculum

Back 40

Broad band of connective tissue that encircles wrist, stabilizes extensors

Front 41

Posterior interosseous n. innervates ______

Back 41

deepest portions of extensors

Front 42

Extensor expansion

Back 42

Tendonous sheath to which the extensors attach; located from MP to PIP

Front 43

Medial Epicodylitis AKA
-Pain with ___ & ___
-Tender within ____ or directly ___

Back 43

-Golfer's Elbow
-Resisted wrist flexion & pronation
-muscle belly; medial epicondyle

Front 44

Lateral Epicondylitis AKA
-Caused by

Back 44

Tennis elbow
-Repetitive motion

Front 45

Avulsion

Back 45

Pulling or tearing away

Front 46

Nursemaid's elbow
-Cause (Ligament involved)
-Pt presentation

Back 46

-Radial head slipping out of annular ligament
-Elbow pronated, partially flexed
--Child will refuse to use arm

Front 47

Reduction of nursemaid's elbow

Back 47

Thumb on annular ligament, supinate arm

Front 48

Fat pad sign

Back 48

Visible posterior fat pad is indicative of an intracapsular (often occult) fracture to elbow pushing the pad up

Front 49

-Colles' Fracture
-AKA

Back 49

-Distal fracture of radius with distal displacement of radius
-Dinner fork deformity

Front 50

-Smith's/Reverse Colles'

Back 50

Displacement of radius anteriorly

Front 51

Radius styloid should be more _____ than ulna

Back 51

distal