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ARTHROLOGY > quiz #3 - elbow > Flashcards

quiz #3 - elbow Flashcards

1
Q

proximal joints

A

GH joint: head of humerus articulates with glenoid fossa of scapula

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2
Q

distal joints

A

(elbow)
humeroulnar
humeroradial
proximal radioulnar

-mid radioulnar & distal radioulnar

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3
Q

elbow joint complex - 2 main joints & 1 accessory

A

humeroulnar (trochlear) joint
humeroradial joint
proximal / superior radioulnar joint

also:
-mid radioulnar joint (interosseous membrane)
-distal/ inferior radioulnar joints (wrist)

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4
Q

humeroulnar (trochlear) joint

A

ulnar bone articulates with trochlea of humerus

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5
Q

humeroulnar (trochlear) joint - type & movements

A

synovial, hinge, diarthrosis, uniaxial

flexion & extension

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6
Q

humeroulnar (trochlear) joint - articular surfaces

A

concave surface of trochlear notch of ulna
convex trochlea of humerus

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7
Q

humeroulnar (trochlear) joint - ligaments

A

joint capsule
radial/ lateral & ulnar/medial collateral ligaments

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8
Q

pronation / supination

A

during pronation, radius crosses over ulna

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9
Q

humeroulnar (trochlear) joint - loose packed / resting position

A

70º elbow flexion
10º supination

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10
Q

humeroulnar (trochlear) joint - closed packed position

A

extension & supination

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11
Q

humeroulnar (trochlear) joint - capsular pattern of restriction

A

1: flexion
2: extension

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12
Q

humeroulnar (trochlear) & humeroradial joints - ROM

A

flexion: 140-150º
extension: 0-10º
supination: 90º
pronation: 80-90º

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13
Q

humeroulnar (trochlear) & humeroradial joints - normal end feels

A

hard & bony / tissue approximation

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14
Q

humeroulnar (trochlear) & humeroradial joints- abnormal end feels

A

early spasm: muscle/ ligament tear
late spasm: instability
empty: ligament rupture/ tear
hard: bony approximation (osteophyte)

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15
Q

humeroulnar (trochlear) joint - ROLL & GLIDE

A

flexion: ROLL = anterior, GLIDE = anterior
extension: ROLL = posterior, GLIDE = posterior

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16
Q

humeroradial joint - type & movements

A

synovial, hinge, diarthrosis, uniaxial

flexion & extension

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17
Q

humeroradial joint - articular surfaces

A

concave surface of radial head
convex surface of capitulum of humerus

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18
Q

humeroradial joint - ligaments

A

joint capsule
radial/ lateral & ulnar/ medial collateral ligaments

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19
Q

humeroradial joint - loose packed / resting position

A

full extension & full supination

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20
Q

humeroradial joint - close packed position

A

elbow flexed to 90º
forearm supinated to 5º

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21
Q

humeroradial joint - capsular pattern of restriction

A

1: flexion
2: extension
3: supination
4: pronation

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22
Q

humeroradial joint - ROLL & GLIDE, PRONATION & SUPINATION

A

flexion: ROLL = anterior, GLIDE = anterior
extension: ROLL = posterior, GLIDE = posterior
pronation/ supination: ROLL = spin

23
Q

proximal / superior radioulnar joint - type & movements

A

synovial, pivot, diarthrosis, uniaxial

pronation & supination

24
Q

proximal / superior radioulnar joint - articular surfaces

A

convex radial head
concave radial notch of ulnar

25
Q

proximal / superior radioulnar joint - ligaments

A

annular ligament
quadrate ligament

26
Q

proximal / superior radioulnar joint - normal end feels

A

in supination: firm
in pronation: hard/ firm

27
Q

proximal / superior radioulnar joint - abnormal end feels

A

early spasm: muscle ligament/ tear
late spasm: instability
empty: ligament rupture/ tear
hard: bony approximation (osteophyte)

28
Q

proximal / superior radioulnar joint - loose packed / resting position

A

35º supination
70º flexion

29
Q

proximal / superior radioulnar joint - close packed position

A

forearm supinated to 5º

30
Q

proximal / superior radioulnar joint - capsular pattern of restriction

A

1: supination
2: pronation

31
Q

proximal / superior radioulnar joint - ROLL & GLIDE

A

pronation: ROLL = anterior, GLIDE: posterior
supination: ROLL = posterior, GLIDE = anterior

32
Q

elbow joint complex - accessory ligaments

A

radial/ lateral collateral ligament (LCL)
ulnar/ medial collateral ligament (MCL)
annular ligament
articular/ joint capsule

33
Q

ulnar/ medial collateral ligament - 3 bundles

A

anterior
posterior
transverse

34
Q

annular ligament

A

-surrounds radial head & radial notch of ulna
-keeps radial head in radial notch
-allows for pronation & supination

35
Q

joint capsule - anterior portion

A

from coronoid & radial fossa TO coronoid process of ulna & annular ligament of radius

36
Q

joint capsule - posterior portion

A

from capitulum, olecranon fossa & lateral epicondyle of humerus TO annular ligament, olecranon process, & ulna, posterior to radial notch

37
Q

elbow joint complex - muscle action summary: FLEXION

A

brachialis
biceps brachii
brachioradialis

38
Q

elbow joint complex - muscle action summary: EXTENSION

A

triceps brachii
anconeus

39
Q

elbow joint complex - muscle action summary: SUPINATION

A

supinator
biceps brachii

40
Q

elbow joint complex - muscle action summary: PRONATION

A

pronator quadratus
pronator teres

41
Q

mid radioulnar joint - type & movements

A

fibrous, syndesmosis (interosseous membrane), amphiarthrosis, uniaxial

supination & pronation

42
Q

mid radioulnar joint - articular surfaces

A

interosseous margins of radius & ulna
(fibrous tissue binds bones together)

43
Q

mid radioulnar joint - ligaments

A

interosseous membrane

44
Q

mid radioulnar joint - movements

A

pronation
supination

45
Q

mid radioulnar joint - pronation & supination (degrees)

A

pronation: 80-90º
supination: 90º

46
Q

distal radioulnar joint - type & movements

A

synovial, pivot, diarthrosis uniaxial

pronation & supination

47
Q

distal radioulnar joint - articular surfaces

A

head of ulnar & ulnar notch of distal radius

48
Q

distal radioulnar joint - ligaments

A

articular disc (triangular fibrocartilage complex, TFCC)
dorsal & palmar radioulnar ligaments

49
Q

distal radioulnar joint - ROLL & GLIDE

A

pronation: ROLL: anterior, GLIDE = anterior
supination: ROLL = posterior, GLIDE = posterior

50
Q

elbow joint complex bursa

A

bicipitoradial bursa

51
Q

olecranon bursa

A

intratendinous: inside tendon
subtendinous: just below tendon
subcutaneous (olecranon): just below skin

52
Q

what is the carrying angle?

A

-angle measured between axis of radius & axis of humerus
-allows arms to bend away from body & swing while walking without hitting hips
-normal to have small cubitus valgus (5-15º)

53
Q

cubitus valgus

A

carrying angle = lower than normal
valgus = “L”
cubitus valgus at ELBOW

54
Q

cubitus varus

A

carrying angle = higher than normal
cubitus varus at ELBOW

ARTHROLOGY (11 decks)

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