Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Kinesiology > Chapter 7 - The Wrist and Hand Joints > Flashcards

Chapter 7 - The Wrist and Hand Joints Flashcards

1
Q

How many bones are in the hand and wrist joints?
How many joints?
How many muscles?
How many are intrinsic (origin and insertion are both inside the hand)

A
  • 29
  • > 25
  • > 30
  • 18
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

How many of each type of bone are there?

  • Carpal bones?
  • Metacarpal bones?
  • Phalagnes?
  • Sesamoid bone?
A 
Carpal:
- 8, 2 rows of 4
Metacarpal:
- 5
Sesamoid:
- Thumb flexor tendon of thumb
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What are the 8 carpal bones?

A
  • Scaphoid, lunate, triquetrum, and pisiform (first row): Proximal
  • Trapezium, trapezoid, capitate, and hamate (second row): Distal
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Scaphoid is the most often injured

  • MOI?
  • Differential Diagnosis?
  • Concerns?
A

MOI:
- FOOSH
Differential Diagnosis:
- Will look like a wrist sprain
Concerns:
- Non-union: two halves start to move apart and don’t come back together
- Avascular Necrosis: dies b/c it has a very poor blood supply, common w/non-union

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Where is the origin for wrist/finger flexors?

Where is the origin for wrist/finger extensors

A
  • Medial side

- Lateral side

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is TFCC?

A
  • Triangular Fibrocartilage Complex
    • Articular Disk
    • Along medial wrist
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What movements do you have at the wrist?

A
  • Flexion and extension, abduction and adduction –> radial deviation and ulnar deviation
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What movements do you have at the fingers?

A
  • Flexion and extension
  • At the MCP have abduction and adduction
  • Middle philange is reference point to differentiate abduction and adduction
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What type of joint is the wrist?

A
  • 4 motions –> diarthrodial –> condyloid –> movement in 2 planes without rotation
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Where does movement of the wrist primarily occur? Carpals?

A
  • Distal radius and proximal

- Carpals –> scaphoid, lunate, and triquetrum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

How many joints does each finger have and what are they?

A
  • Metacarpalphalangeal Joint (MCP)
  • Proximal Interphalangeal Joint (PIP)
  • Distal Interphalangeal Joint (DIP)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Joint Types

  • MCP?
  • PIP?
  • DIP?
A

MCP:
- Diarthrodial –> condyloid
PIP:
- Hinge –> ginglymus –> only flexion and extension
DIP:
- Hinge –> ginglymus –> only flexion and extension

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

How many joints does the thumb have? What are they? And what type are they?

A
  • 2 Joints
  • Interphalangeal Joint (IP) and Carpometacarpal Joint (CMC)
    IP:
  • Hinge –> gignlymus –> only flexion and extension
    CMC:
  • Saddle like –> sellar
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What are the wrist flexors?

A
  • Flexor carpiadialis
  • Flexor caripulnaris
  • Palmaris Longus
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What are the wrist extensors?

A
  • Extensor carpiradialis longus
  • Extensor carpiradialis brevis
  • Extensor Carpiulnaris
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What are the philanges flexors?

A
  • Flexor digitorum superficialis
  • Flexor digitorum profundus
  • Flexor pollicis longus
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What are the philanges extensors?

A
  • Extensor digitorum
  • Extensor indicis
  • Extensor digiti minimi
  • Extensor pollicis longus (thumb extensor)
  • Extensor pollicis brevis (thumb extensor)
18
Q

What is carpal tunnel syndrome?

A
  • Flexor digitorum superficialis tendons
  • Flexor digitorum profundus tendons
  • Pressure on median nerve = symptoms = numbness, tingling, burning, or pain
19
Q

What is the common origin of wrist extensors?

A
  • Lateral Epicondyle
20
Q

What is the retinaculum?

A
  • Just proximal to the wrist, both anteriorly and posteriorly, prevents bowstringing of our tendons
21
Q

Flexor Carpi Radialis Muscle

  • Origin?
  • Insertion?
  • Movements?
A 
Origin:
- Medial epicondyle of the humerus
Insertion:
- Base of second and third metacarpal, anterior (palmar surface)
Movements:
- Flexion of the wrist
- Abduction of the wrist
- Weak flexion of the elbow
- Weak pronation of the forearm
22
Q

Palmaris Longus Muscle

  • Origin?
  • Insertion?
  • Movements?
A 
Origin:
- Medial epicondyle of humerus
Insertion:
- Palmaris aponeurosis of second, third, fourth, and fifth metacarpals
Movements:
- Flexion of the wrist
- Weak flexion of the elbow
23
Q

Flexor Carpi Ulnaris Muscle

  • Origin?
  • Insertion?
  • Movements?
A

Origin:
- Medial epicondyle of humerus, posterior aspect of proximal ulna
Insertion:
- Pisiform, hamate, and base of fifth metacarpal

24
Q

Extensor Carpi Ulnaris Muscle

  • Origin?
  • Insertion?
  • Movements?
A

Origin:
- Lateral epicondyle of humerus
- Middle 2/4 of the posterior border of the ulna
Insertion:
- Base of fifth metacarpal (dorsal surface)
Movements:
- Extension of wrist
- Adduction of wrist together with flexor carpi ulnaris muscle
- Weak extension of elbow

25
Q

Extensor Carpi Radialis Brevis

  • Origin?
  • Insertion?
  • Movements?
A 
Origin:
- Lateral epicondyle of humerus
Insertion:
- Base of third metacarpal
Movements:
- Extension of wrist
- Abduction of wrist
- Weak flexion of elbow
26
Q

Extensor Carpi Radialis Longus Muscle

  • Origin?
  • Insertion?
  • Movements?
A

Origin:
- Lower 1/3 of the lateral supracondylar ridge of humerus and lateral epicondyle of the humerus
Insertion:
- Base of second metacarpal (dorsal surface)
Movements:
- Extension of wrist
- Abduction of wrist
- Weak flexion of elbow
- Weak pronation to neutral from a fully supinated position

27
Q

Flexor Digitorum Superficialis Muscle

  • Origin?
  • Insertion?
  • Movements?
A

Origin:
- Medial epicondyle of the humerus. Ulnar head: medial coronoid process. Radial head: upper 2/3 of anterior border of the radius
Insertion:
- Split tendons attach to sides of middle phalanx to four fingers
Movements:
- Flexion of fingers at MCP and PIP joints
- Flexion of the wrist
- Weak flexion of elbow

28
Q

Flexor Digitorum Profundus Muscle

  • Origin?
  • Insertion?
  • Movements?
A

Origin:
- Proximal 3/4 of anterior and medial ulna
Insertion:
- Base of distal phalanxes of the four fingers
Movements:
- Flexion of 4 fingers at MCP, PIP, and DIP joints
- Flexion of wrist

29
Q

Flexor Pollicis Longus Muscle

  • Origin?
  • Insertion?
  • Movements?
A 
Origin: 
- Middle anterior surface of radius and from the anterior medial border of ulna just distal to coronoid process
Insertion:
- Base of distal phalanx of thumb
Movements:
- Flexion of thumb at CMC, MCP, and IP joints
- Flexion of wrist
- Abduction of wrist
30
Q

Extensor Digitorum Muscle

  • Origin?
  • Insertion?
  • Movements?
A 
Origin:
- Lateral epicondyle of humerus
Insertion:
- Four tendons to bases of middle and distal phalanges of four fingers
Movements:
- Extension of 2nd, 3rd, 4th, and 5th phalanges at MCP joints
- Extension of wrist
- Weak extension of elbow
31
Q

Extensor Indicis Muscle

  • Origin?
  • Insertion?
  • Movements?
A

Origin:
- Middle to distal 1/3 of posterior ulna
Insertion:
- Base of middle and distal phalanxes of second phalange
Movement:
- Extension of the index finger at MCP joint
- Weak wrist extension
- Weak supination of forearm from a pronated position

32
Q

Extensor Digiti Minimi Muscle

  • Origin?
  • Insertion?
  • Movements?
A 
Origin:
- Lateral epicondyle of humerus
Insertion:
- Base of middle and distal phalanxes of fifth philange
Movements:
- Extension of little finger at MCP joint
- Weak wrist extension
- Weak elbow extension
33
Q

Extensor Pollicis Longus Muscle

  • Origin?
  • Insertion?
  • Movements?
A

Origin:
- Posterior lateral surface of lower middle ulna
Insertion:
- Base of distal phalanx of thumb
Movement:
- Extension of thumb at CMC, MCP and IP joint
- Extension of wrist
- Abduction of wrist
- Weak supination of forearm from a pronated position

34
Q

Extensor Pollicis Brevis Muscle

  • Origin?
  • Insertion?
  • Movements?
A 
Origin:
- Posterior surface of lower middle radius
Insertion:
- Base of proximal phalanx of thumb
Movements:
- Extension of thumb at CMC and MCP joints
- Weak wrist extension
- Wrist abduction
35
Q

Abductor Pollicis Longus Muscle

  • Origin?
  • Insertion?
  • Movements?
A 
Origin:
- Posterior aspect of the radius and midshaft of ulna
Insertion:
- Base of first metacarpal
Movements:
- Abduction of thumb at CMC joint
- Abduction of wrist
- Extension of thumb at CMC joint
- Weak supination of forearm from a pronated position
- Weak flexion of wrist
36
Q

Intrinsic Muscles of Hand (That we need to know)

A
  • Thenar eminence - 1st metacarpal

- Hypothenar eminence - 5th metacarpal

37
Q

Wrist Flexion

- Muscles?

A
  • Flexor carpi radialis
  • Flexor carpi ulnaris
  • Palmaris longus
  • Flexor digitorum superficialis
  • Flexor digitorum profundus
  • Flexor pollicis longus
38
Q

Wrist Extension

- Muscles?

A
  • Extensor carpi radialis longus
  • Extensor carpi radialis brevis
  • Extensor carpi radialis ulnaris
  • Extensor digitorum
  • Extensor indicis
  • Extensor digiti minimi
  • Extensor pollicis longus
  • Extensor pollicis brevis
39
Q 
Wrist Abduction (radial deviation, radial flexion)
- Muscles?
A
  • Flexor carpi radialis
  • Extensor carpi radialis longus
  • Extensor carpi radialis brevis
  • Abductor pollicis longus
  • Extensor pollicis longus
  • Extensor pollicis brevis
40
Q 
Wrist Adduction (ulnar deviation, ulnar flexion)
- Muscles?
A
  • Flexor carpi ulnaris

- Extensor carpi ulnaris

41
Q

Philangeal Flexion

- Muscles?

A
  • Flexor digitorum superficialis
  • Flexor digitorum profundus
  • Flexor pollicis longus
42
Q

Philangeal Extension

- Muscles?

A
  • Extensor digitorum
  • Extensor indicis
  • Extensor digiti minimi
  • Extensor pollicis longus
  • Extensor pollicis brevis

Kinesiology (4 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions