Wrist and hand- stability

Question 1

Stabilising structures of the wrist

Answer 1

Joint capsule
Extracapsular ligaments
Palmar ligaments
Collateral ligaments
Triangular fibrocartilage (TFCC)

Question 2

Joint capsule origin

Answer 2

distal end of the radius and ulna

Question 3

Joint capsule insertion

Answer 3

proximal surfaces of the articulating carpal bones.

Question 4

Function of triangular fibrocartillage

Answer 4

Aids with load transmission across wrist

Question 5

Triangular fibrocartillage is made of…

Answer 5

Articular Disc
Radioulnar ligaments
Ulnocarpal ligaments

Question 6

3 ligaments at the wrist

Answer 6

Radial collateral ligament
ulnar collateral ligament
transverse ligament

Question 7

Origin of radial collateral ligament

Answer 7

Radius styloid process

Question 8

Insertion of radial collateral ligament

Answer 8

scaphoid

Question 9

Radial collateral ligament resists

Answer 9

Radial deviation

Question 10

Ulnar collateral ligament origin

Answer 10

Ulna styloid process

Question 11

Ulnar collateral ligament insertion

Answer 11

triquetral, pisiform

Question 12

Ulnar collateral ligament resists

Answer 12

radial deviation

Question 13

Transverse ligament origin

Answer 13

scaphoid

Question 14

Transverse ligament insertion

Answer 14

hamate

Question 15

Transverse ligament resists

Answer 15

bowstringing of the flexor tendons