UE specific primary structures- wrist

Question 1

what ligaments are associated with the wrist complex?

Answer 1

dorsal radiocarpal ligament
palmar radiocarpal ligament
radial collateral ligament

Question 2

what ligament is the only major ligament on the dorsal surface of the wrist?

Answer 2

dorsal radiocarpal ligament

Question 3

what ligament originates on the posterior surface of the distal radius and styloid process of the radius and attaches to the lunate and triquetrium?

Answer 3

dorsal radiocarpal ligament

Question 4

where does the dorsal radiocarpal ligament of the wrist originate and attach?

Answer 4

origin: posterior surface of distal radius and styloid process of radius
attachment: lunate and triquetrium

Question 5

what motion does the dorsal radiocarpal ligament of the wrist limit?

Answer 5

flexion

Question 6

what ligament of the wrist originates from the anterior surface of the distal radius and attaches to the capitate triquetrium and scaphoid?

Answer 6

the palmar radiocarpal ligament

Question 7

where does the palmar radiocarpal ligament originate and attach?

Answer 7

origin: anterior surface of distal radius
attachment: triquetrium, capitate, scaphoid

Question 8

what motion of the wrist does the palmar radiocarpal ligament limit?

Answer 8

hyperextension

Question 9

what ligament of the wrist originates from the styloid process of the radius and attaches on the scaphoid and trapezium?

Answer 9

the radial collateral ligament

Question 10

where does the radial collateral ligament of the wrist originate and attach?

Answer 10

origin: styloid process of radius
attachment: scaphoid and trapezium

Question 11

what motion does the radial collateral ligament of the wrist prevent?

Answer 11

ulnar deviation

Question 12

what ligament of the wrist limits wrist flexion?

Answer 12

dorsal radiocarpal ligament

Question 13

what ligament of the wrist limits wrist hyperextension?

Answer 13

palmar radiocarpal ligament

Question 14

what ligament of the wrist limits ulnar deviation of the wrist?

Answer 14

radial collateral ligament

Question 15

what ligament of the wrist becomes taut with extreme wrist flexion or extension?

Answer 15

the radial collateral ligament

Question 16

what is the tunnel of guyon and where is it located in the wrist?

Answer 16

a space located between:
the hook of hamate
pisiform
palmar carpal ligament
flexor retinaculum

Question 17

what structures does the tunnel of guyon of the wrist allow to pass through?

Answer 17

the ulnar artery and nerve as they enter the hand

Question 18

compression of the ulnar nerve at the tunnel of guyon may result in…

Answer 18

ulnar tunnel syndrome

Question 19

ulnar tunnel syndrome can result from compression of the __ nerve at the __ __ __

Answer 19

ulnar; tunnel of guyon

Question 20

what structures of the wrist/hand border the tunnel of guyon?

Answer 20

the hook of hammate
pisiform
palmar carpal ligament
flexor retinaculum

Question 21

where is the carpal tunnel located within the wrist?

Answer 21

close to the deep surface of the flexor retinaculum

Question 22

what structure does the carpal tunnel allow to pass through towards the palm?

Answer 22

the median nerve

Question 23

what can result in the compression of the median nerve?

Answer 23

any condition resulting in reduction of the size of the carpal tunnel (tenosynovitis, inflammation to the flexor retinaculum)

Question 24

what is the triangular fibrocartilage complex of the wrist and where is it located?

Answer 24

a cartilaginous disc that sits between the ulna, lunate and triquetrium

Question 25

what is the function of the triangular fibrocartilage complex of the wrist?

Answer 25

wrist stability connects radius and ulna together allows for better force distribution through the wrist

Question 26

what is the anatomic snuff box and where is it found?

Answer 26

a depression found on the dorsal surface of the wrist near the distal radius

Question 27

what borders (3) the anatomic snuff box?

Answer 27

abductor pollicis longus tendons extensor pollicis brevis extensor pollicis longus

Question 28

the anatomic snuff box is used for palpation of what bone when there is concern for for fracture?

Answer 28

scaphoid

Question 29

what type of structure is the extensor retinaculum of the wrist? what aspect of the wrist (dorsal or palmar) does it cross? what tendons (wrist extensor or flexor) does it cover?

Answer 29

ligamentous structure crosses the dorsal aspect of the wrist covers the tendons of the wrist extensor musculature

Question 30

what does the extensor retinaculum of the wrist prevent?

Answer 30

'bowstringing' of wrist extensor musculature tendons as the wrist is extended

Question 31

what type of structure is the flexor retinaculum of the wrist? what aspect of the wrist (dorsal or palmar) does it cross?

Answer 31

ligamentous structure crosses the palmar aspect of the wrist

Question 32

what is the flexor retinaculum of the wrist also known as?

Answer 32

transverse carpal ligament

Question 33

what structures does the flexor retinaculum of the wrist serve as an attachment sight for?

Answer 33

thenar and hypothenar muscles

Question 34

after it crosses the palmar aspect of the wrist, what does the flexor retinaculum of the wrist form?

Answer 34

the most anterior aspect of the carpal tunnel of the wrist

Question 35

what does the flexor retinaculum of the wrist prevent?

Answer 35

'bow stringing' of the tendons of the wrist flexor musculature as the wrist is flexed

Question 36

what does the interosseous membrane of the wrist consist of?

Answer 36

a dense band of fibrous connective tissue

Question 37

the interosseous membrane of the wrist spans across what two structures? which direction does the tissue of the interosseous membrane specifically run?

Answer 37

spans across the radius to ulna (proximal to distal radioulnar joint) tissue runs obliquely

Question 38

what forces does the interosseous membrane of the wrist serve as a stabilizer against when applied to the wrist?

Answer 38

axial forces applied to the wrist

Question 39

what primary structure of the wrist is palpated when there is concern for scaphoid fracture?

Answer 39

the anatomic snuff box

Question 40

what primary structure of the wrist prevents bowstringing of tendons of wrist extensor musculature as the wrist is extended?

Answer 40

extensor retinaculum

Question 41

what primary structure of the wrist forms the most anterior aspect of the capral tunnel?

Answer 41

the flexor retinaculum

Question 42

what primary structure of the wrist serves as an attachment sight for the thenar and hypothenar muscles?

Answer 42

the flexor retinaculum

Question 43

what primary structure of the wrist prevents bowstringing of tendons of wrist flexor musculature as the wrist is flexor?

Answer 43

the flexor retinaculum

Question 44

what primary structure of the wrist serves as a stabilizer against axial forces applied to the wrist?

Answer 44

interosseous membrane