Wrist

Question 1

What kind of joint is the wrist joint

Answer 1

Radio carpal joint which is a complex biaxial synovial joint

Question 2

Name the three carpal bones the wrist connects the fore arm to the hand

Answer 2

Lunate
Scaphoid
Triquetrum

Question 3

The order of the carpal bones

Answer 3

Scaphoid First
Lunate 2nd
Triquetrum 3rd

Question 4

Where does the radio carpal joint lie

Answer 4

At the proximal wrist crease
Where you see your veins

Question 5

How many carpal bones are there

Answer 5

8

Question 6

There are 8 carpal bones they are divided into

Answer 6

Distal and proximal
4 each

Question 7

What is one the proximal row( running from thumb to pinky)

Answer 7

Scaphoid
Lunate
Triquetral
Pisiform

Question 8

Distal row?

Answer 8

Trapezium 1st
Trapezoid 2nd
Capitate 3rd
Hamate 4th

Question 9

What is importance thing about articular discs

Answer 9

There is no direct contact between the carpals and The end of the ulna so the disc cartilaginous in nature bridges the gap and increases the congruence between the ulna and the carpal

Question 10

The wrist joint is proximally and distally formed. what is the proximal part made of?

Answer 10

The distal end of the radius and articular disc

Question 11

Distal part?

Answer 11

3 proximal carpal bones

Question 12

The following are proximal carpal bones except
Scaphoid
Pisiform
Lunate
Triquetral

Answer 12

Pisiform

Question 13

The ulna is part of the wrist true or false

Answer 13

False

Question 14

How many joints are in the wrist and name them

Answer 14

Radiocarpal joint
Ulnocarpal joint
Distal radioulnar joint

Question 15

What’s the radiocarpal joint

Answer 15

Where the radius joins the first row of wrist bones (the proximal carpal bones scaphoid, lunate, triquetrum)

Question 16

What’s the ulnocarpal joint

Answer 16

Where the ulna meets the lunate and triquetrum

Question 17

Distal radioulnar joint?

Answer 17

Where the radius and ulna connect (forearm bones)

Question 18

How many ligaments are there in the wrist and what are they

Answer 18

Palmar radiocarpal
Dorsal radiocarpal
Ulna collateral
Radial collateral

Question 19

How is the palmar radiocarpal ligament

Answer 19

Runs from the Distal end of the radius and runs to the anterior surface of the proximal carpal bones

Question 20

How’s the dorsal radiocarpal

Answer 20

Begins from the lower end of the radius and runs downwards and attaches to the dorsal surface of the proximal carpal bones

Question 21

How’s the ulna collateral

Answer 21

it’s extends from the tip of the styloid process of the ulna to the triquetrum and Pisiform bones

Question 22

How’s the radial collateral ligaments

Answer 22

It’s extends from the styloid process of the radius to the lateral side of the scaphoid bone and trapezium

Question 23

What is the blood supply of the wrist

Answer 23

It receives blood from the branches of the dorsal and Palmar carpal arches derived from the radial and ulnar arteries

Question 24

What is the superficial palmar arch made off

Answer 24

Ulna artery plus superficial branch of radial artery

Question 25

What is the deep Palmar arch made of

Answer 25

It is made of the radial artery plus deep branch of Ulna artery

Question 26

How many nerve branches do the wrist have?

Answer 26

3 . they are Radial nerve Ulna nerve and median nerve

Question 27

What are the nerve branches of the radial, ulna and median nerve

Answer 27

Radial nerve- posterior interosseous branch Ulna nerve- anterior interosseous branch Median nerve- deep and dorsal branches

Question 28

What is the autonomous testing site for the median nerve and ulna nerve

Answer 28

The tip of the index finger and the pinky finger respectively

Question 29

What causes collen fracture (most common)

Answer 29

Caused by falling onto an outstretched wrist

Question 30

What happens in Collen's fracture

Answer 30

It's affects the radius and displaces the distal fragment posteriorly and the ulna styloid process can be damaged and this avulsed in majority of cases

Question 31

The condition diner's fork deformity is caused by

Answer 31

Collen's fracture

Question 32

What is the most commonly fractured carpal bone

Answer 32

Scaphoid bone

Question 33

What causes scaphoid fracture

Answer 33

Falling on an outstretched hand (foosh)

Question 34

What is the scaphoid bone prone to on fracture

Answer 34

Avascular necrosis

Question 35

Meaning of avascular necrosis of the scaphoid bone

Answer 35

Meaning it may interrupt the blood supply of the proximal parts of the scaphoid bone leaving it avascular