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KIN245 > Test 3: Wrist & Hand > Flashcards

Test 3: Wrist & Hand Flashcards

1
Q

Carpal bones- Proximal Row:

A
  • Scaphoid (navicular) “boat shaped”
  • Lunate “cresent shaped”
  • Triquetrum “three-cornered “
  • Pisiform “pea shaped”
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2
Q

Carpal bones- Distal Row:

A
  • Hamate “hooked”
  • Capitate “head shaped”
  • Trapezoid “table shaped”
  • Trapezium “little table”
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3
Q

Carpal bones enhances our…

A

Range of Motion

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4
Q

What is the most common fractured bone in the body?

A

Scaphoid

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5
Q

What is the most common dislocated bone in the body?

A

Lunate

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6
Q

What part is the thumb missing?

A

middle

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7
Q

How many phalanges are there?

A

14

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8
Q

• weak, thin ligament
• spans from the styloid process of the radius to the scaphoid and
trapezium bones
Function
• Stabilizes lateral aspect of the wrist joint
• Resists Excessive Ulnar Deviation (Adduction)

A

Radial collateral ligament

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9
Q

• short ligamentous band
• attaches to the styloid process of the ulna and then splits into two
sheets as it descends to attach to the triquetral and pisiform bones
Function
• Stabilizes medial aspect of the wrist joint
• Resists Excessive Radial Deviation (Abduction)

A

Ulnar collateral ligament

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10
Q

Wrist (radiocarpal) joint (condyloid)

A
  • Flexion & extension

* Ulnar and radial deviation

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11
Q

Metacarpal-phalangeal joints (condyloid)

A
  • Flexion & extension

* Ulnar and radial deviation

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12
Q

PIP joints (ginglymus)

A

Flexion & extenstion

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13
Q

DIP joints (ginglymus)

A

Flexion & extension

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14
Q

Carpometacarpal joint

A

Saddle

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15
Q

Metacarpophalangeal

A

Ginglymus

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16
Q

Interphalangeal

A

Condyloid

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17
Q

Origin of the flexor carpi radialis

A

Common flexor tendon from medial epicondyle of humerus

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18
Q

Insertion of flexor carpi radialis

A

Bases of 2nd and 3rd

metacarpals

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19
Q

Action of the flexor carpi radialis

A
  • Flex the wrist
  • Abduct the wrist
  • May assist to flex the elbow
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20
Q

Origin of the palmaris longus

A

• Common flexor tendon from medial epicondyle of humerus

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21
Q

Insertion of the palmaris longus

A

• Flexor retinaculum and

palmar aponeurosis

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22
Q

Action of the palmaris longus

A
  • Tense the palmer fascia
  • Flex the wrist
  • May assist to flex the elbow
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23
Q

Origin of the flexor carpi ulnaris

A
  • Common flexor tendon from medial epicondyle of humerus

* Posterior surface of proximal ⅔ of ulna

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24
Q

Insertion of flexor carpi ulnaris

A

• Pisiform, hook of the hamate,

and base of 5th metacarpal

25
Action of flexor carpi ulnaris
* Flex the wrist * Adduct the wrist * Assist to flex the elbow
26
Origin of the flexor digitorum superficials
* Common flexor tendon from medial epicondyle of humerus * Ulnar collateral ligament * Coronoid process of the ulna * Interosseous membrane * Proximal shaft of radius
27
Insertion of flexor digitorium superficials
• Sides of middle phalanges of | 2nd – 5th fingers
28
Action of flexor digitorum superficials
* Flex the 2nd – 5th fingers | * Flex the wrist
29
Origin of flexor digitorum profundus
• Anterior and medial surfaces of proximal ¾ of ulna
30
Insertion of flexor digitorum profundus
• Bases of distal phalanges, | palmer surface of 2nd - 5th fingers
31
Action of flexor digitorum profundus
* Flex the 2nd – 5th fingers | * Assist to flex the wrist
32
Origin of extensor carpi radialis brevis
• Common extensor tendon from the lateral epicondyle of humerus
33
Insertion of extensor carpi radialis brevis
Base of 3rd metacarpals
34
Action of the extensor carpi radialis brevis
* Extend the wrist * Abduct the wrist * Assist to flex the elbow
35
Origin of the extensor carpi ulnaris
• Common extensor tendon from the lateral epicondyle of humerus
36
Insertion of the extensor carpi ulnaris
Base of the 5th metacarpal
37
Action of the extensor carpi ulnaris
* Extend the wrist | * Adduct the wrist
38
Origin of the extensor digitorum
• Common extensor tendon from the lateral epicondyle of humerus
39
Insertion of the extensor digitorum
• Bases of middle and distal phalanges of 2nd 5th fingers
40
Action of the extensor digitorum
* Extend the 2nd - 5th fingers | * Assist to extend the wrist
41
Origin of the extensor carpi radialis longus
• Distal ⅓ of the lateral supracondylar ridge of humerus
42
Insertion of extensor carpi radialis longus
base of 2nd metacarpal
43
Action of the extensor carpi radialis longus
* Extend the wrist * Abduct the wrist * Assist to flex the elbow
44
Origin of flexor pollics longus
• Anterior surface of radius and interosseous membrane
45
Insertion of flexor pollics longus
Base of distal phalanx of thumb
46
Action of flexor pollics longus
* Flex the thumb | * Assist to flex the wrist
47
Origin of the flexor pollics longus
• Posterior surface of ulna and interosseous membrane
48
Origin of the extensor pollicis longus
Posterior surface of ulna and interosseous membrane
49
Insertion of extensor pollicis longus
Base of distal phalanx of thumb
50
Action of extensor pollicis longus
* Extend the thumb | * Abduct the wrist
51
Origin of extensor pollicis brevis
posterior surface of distal/middle radius and interosseous membrane
52
Insertion of the extensor pollicis brevis
base of proximal phalanx of thumb
53
Action of the extensor pollicis brevis
* extension of 1st MCP joint | * abduct the wrist
54
Origin of the Abductor Pollicis Longus
posterior surface of radius and ulna, and interosseous membrane
55
Insertion of abductor pollicis longus
Base of 1st metacarpal
56
Action of abductor pollicis longus
* Abduct the thumb * Extend the thumb * Abduct the wrist
57
Origin of the adductor pollicis
• Capitate, 2nd and 3rd metacarpals
58
Insertion of the adductor pollicis
• Base of proximal phalanx of thumb
59
Action of the adductor pollicis
* Adduct the thumb | * Assist to flex the thumb

KIN245 (14 decks)

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