Wrist And Hand

Question 0

Most commonly broken carpal

Answer 0

Scaphoid

Question 1

Carpal bones

Answer 1

8 short bones
Lateral to medial
Prox: scaphoid. Lunate. Triquetral: pisiform.
Distal: trapezium. Trapezoid. capitate. Hamulus.

Question 2

Most commonly dislocated carpal

Answer 2

Lunate

Question 3

Scaphoid

Answer 3

Carpal.
Proximal, most lateral
Most commonly broken
Boat shaped
Articulates with radius (radiocarpal joint)
Has a tubercle which anchors flexor retinaculum

Question 4

Lunate

Answer 4

Carpal
Most frequently dislocated
Crescent shaped
Articulates with radius (radiocarpal joint)

Question 5

Triquetrum

Answer 5

Carpal
Articulates with ulna via meniscis
Ulnomeniscotriquestral joint

Question 6

Pisiform

Answer 6

Carpal
Sits on triquetal bones.
Acts as Sesamoid for FCU
Anchors flexor retinaculum

Question 7

Trapezium

Answer 7

Carpal
Distal, most lateral
Saddle shaped. Articulates with 1st metacarpal
Tubercle anchors flexor retinaculum.

Question 8

Trapezoid

Answer 8

Distal

Supports base of 2nd metacarpal

Question 9

Capitate

Answer 9

Carpal
“Keystone”
Mid carpal, centre of wrist
Cube shaped.

Question 10

Hamate

Answer 10

Distal, most lateral carpal

Contains hook of hamate which anchors flexor retinaculum.