KINE 3200-CHAPTER 6: ELBOW & RADIOULNAR JOINTS Flashcards

1
Q

elbow and radioulnar joints

A

Grouped together because of close anatomical relationship​

Elbow movements are clearly distinguishable from those of Radioulnar & wrist

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2
Q

radioulnar joint is a

A

pivot type joint

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3
Q

Which bone is larger proximally?

A

Ulna

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4
Q

What bone is larger distally?

A

Radius

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5
Q

what is the origin of the radioulnar joint?

A

humerus, scapula and ulna
(pronate and supinate)

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6
Q

what is the insertion point of the radioulnar joint?

A

radius

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7
Q

Movements of radioulnar joint

A

pronation and supination

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8
Q

what are they key bony landmarks?

A

Medial condyloid ridge, olecranon process, coronoid process, & radial tuberosity

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9
Q

What type of joint is the elbow joint?

A

ginglymus (hinge joint)

elbow joint can be thought of as two joints- humeroulnar and humeroradial)

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10
Q

what is the tommy john procedure?

A

surgery in which tendon graft from palmaris longus tendon is used to reconstruct a ligament

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11
Q

what does the humerus articulate with?

A

scapula, radius and ulna

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12
Q

what does the radius articulate with?

A

capitulum

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13
Q

what does the ulna articulate with?

A

trochlea

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14
Q

What is another name for medial collateral ligament?

A

ulnar collateral ligament

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15
Q

what is another name for lateral collateral ligament?

A

radial collateral ligament

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16
Q

Elbow movements
(FLEXION)

A

movement of the forearm toward the shoulder by bending the elbow to decrease its angle

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17
Q

Elbow movements
(EXTENSION)

A

movement of the forearm away from the shoulder by straightening the elbow to increase its angle

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18
Q

Radioulnar movements
(SUPINATION)

A

external rotary movement of the radius on the ulna that results in the hand moving from the palm-down to palm-up position

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19
Q

Radioulnar movements
(PRONATION)

A

internal rotary movement of the radius on the ulna that results in the hand moving from the palm-up to palm-down position

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20
Q

Elbow and radioulnar joint muscles
(ANTERIOR-PRIMARILY FLEXION AND PRONATION)

A

BICEPS BRACHII
BRACHIALIS
BRACHIORADIALIS
PRONATOR TERES
PRONATOR QUADRATUS

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21
Q

Elbow and radioulnar joint muscles
(POSTERIOR-PRIMARILY EXTENSION AND SUPINATION)

A

TRICEPS BRACHII
ANCONEUS
SUPINATOR

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22
Q

what is the nerve for biceps brachii
?

A

musculocutaneous nerve (C5,C6)

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23
Q

Biceps brachii crosses 3 joints…

A

1.elbow joint
2.radioulnar joint
3.shoulder joint

-meaning it is multiarticular

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24
Q

What is the origin of the short head of the biceps brachii?

A

coracoid process

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25
what is the origin of the long head of then biceps brachii?
supraglenoid tubercle
26
what is the insertion point of the biceps brachii?
radial tuberosity
27
biceps brachii actions:
supination of forearm horizontal adduction weak flexion of shoulder joint weak abduction of shoulder joint when externally rotating
28
where to palpate the biceps brachii?
anterior humerus
29
how to strengthen biceps brachii?
curling with a barbell rope climbing chin-ups
30
how to stretch biceps brachii?
when you start with full elbow extension and progress to full horizontal abduction
31
where does brachialis originate?
distal half of the anterior portion of humerus
32
where does the brachialis insert?
coronoid process of ulna
33
what is the nerve for brachialis?
musculocutaneous nerve and sometimes the radial and median nerve (C5,C6)
34
How many joints does brachialis cross?
Only one joint (the elbow joint)
35
what are the actions of the brachialis?
flexion of elbow and pronation
36
where to palpate brachialis?
deep on either side of the biceps tendon
37
how to strengthen brachialis?
curling exercises
38
How to stretch brachialis?
extending elbow with shoulder relaxed and flexed
39
What is the origin of the brachioradialis?
distal two-thirds of lateral condyloid (supracondylar) ridge of the humerus
40
what is the insertion of the brachioradialis ?
lateral surface of the distal end of radius at styloid process
41
what is the brachioradialis also called?
the hitchhiker muscle
42
what is the nerve for the brachioradialis?
Radial nerve (C5,C6)
43
what are the actions of the brachioradialis?
supination of forearm from pronation to neutral, pronation of forearm from supination to neutral and flexion of elbow
44
where to palpate brachioradialis?
anterolaterally on proximal forearm during resisted elbow flexion with radioulnar joint positioned in neutral
45
how to strengthen brachioradialis?
elbow curls against resistance as well as pronation and supination movements
46
how to stretch brachioradialis
maximal extension of elbow with the shoulder in flexion and forearm in either supination or pronation
47
what is the origin for the medial head of the triceps brachii?
distal two thirds of posterior surface of the humerus
48
what is the origin for the long head of the triceps brachii?
infraglenoid tubercle of scapula
49
what is the origin for the lateral head of the triceps brachii?
upper half of posterior surface of the humerus
50
what is the nerve for triceps brachii?
radial nerve (C7,C8)
51
actions of triceps brachii
supination and extension
52
actions of long head of triceps brachii
extension, adduction, and horizontal abduction of shoulder joint
53
where to palpate triceps brachii?
posterior arm from a resisted extension from a flexed position
54
how to strengthen triceps brachii?
bench oress with a dumbbell push-ups tricep curls
55
how to stretch triceps brachii?
both the shoulder and elbow should be in maximal flexion
56
what is the origin of anconeus?
posterior surface of lateral condyle of humerus
57
what is the insertion of anconeus?
posterior surface of upper ulna and olecranon
58
what is the nerve for anconeus?
radial nerve (C7,C8)
59
what are the actions of anconeus?
Extension of elbow and supination function of anconeus: pull synovial membrane of elbow joint out of the way of the advancing olecranon process during elbow extension
60
where to palpate anconeus?
posterolateral aspect of proximal ulna to olecranon process during resisted extension of elbow with wrist flexed
61
how to strengthen anconeus?
any elbow extension exercise against resistance
62
how to stretch anconeus?
maximal elbow flexion
63
what is the origin for pronator teres?
distal part of medial condyloid ridge of humerus, medial side of the proximal ulna
64
where is the insertion for pronator teres?
middle third of the lateral surface of radius
65
what is the nerve for pronator teres?
median nerve (C6,C7)
66
what are the actions for pronator teres?
weak flexor of elbow, pronation of forearm
67
where to palpate pronator teres?
anteromedial surface of proximal forearm during resisted mid to full pronation
68
how to strengthen pronator teres?
holding hammer in hand with hammer head suspended from ulnar side while forearm is supported on desk
69
how to stretch pronator teres?
elbow fully extended while taking forearm into full supination
70
what is the origin for pronator quadratus?
distal fourth of anterior side of ulna
71
what is the insertion for pronator quadratus?
distal fourth of the anterior side of radius
72
what is the nerve for pronator quadratus?
median nerve (C6,C7)
73
what are the actions for pronator quadratus?
pronation of forearm and elbow and flexion
74
where to palpate pronator quadratus?
with forearm in supination it can be palpated on either side of radial pulse with resisted pronation
75
how to strengthen pronator quadratus?
pronator exercises against resistance
76
how to stretch pronator quadratus?
using partner to grasp the wrist and passively take the forearm into extreme supination
77
what is the origin of the supinator?
lateral epicondyle of humerus and neighboring posterior part of ulna
78
what is the insertion of the supinator?
lateral surface of proximal radius just below the head
79
what is the nerve for the supinator?
radial nerve (C6)
80
what are the actions of supinator?
supination of forearm and extension
81
where to palpate supinator?
deep to brachioradialis, extensor carpi radialis longus, extensor carpi radialis brevis, on lateral side of proximal radius
82
how to strengthen supinator?
hammer exercises
83
how to stretch supinator?
when arm is maximally pronated
84
what does the radial nerve supply?
provides sensation to posterolateral arm, forearm and hand
85
what does the median nerve supply?
provides sensation to palmar aspect of hand and first three phalanges
86
what is tennis elbow?
also known as lateral epicondylitis is frequently associated with gripping and lifting activities lateral epicondylitis has to do with extensor digitorum muscle near its origin on lateral epicondyle
87
medial epicondylitis
associated with the wrist flexors and pronator near the origin on the medial epicondyle