Carpals

Question 1

What kind of bones are the Carpals

Answer 1

Pisiform is Sesamoid

The other 7 are Short

Question 2

Name the 4 Carpals in the Proximal Row (Lateral to Medial)

Answer 2

Scaphoid
Lunate
Triquetral
Pisiform

Question 3

Name the 4 Carpals in the Distal Row (Medial to Lateral)

Answer 3

Hamate
Capitate
Trapezoid
Trapezium

Question 4

What is the Mnemonic I like to use to remember the Carpals

Answer 4

So Long To Pinky (Lat to Med)

Here Comes The Thumb (Med to Lat)

Question 5

Name the 5 Associated Joints

Answer 5

Ulnomeniscotriquetral
Radiocarpal
Midcarpal
Intercarpal
Carpometacarpal

Question 6

What are the articulating surfaces of the Ulnomeniscotriquetral Jt

Answer 6

Distal Ulna and Triquetral Carpal, sandwiching a meniscus

Question 7

What are the articulating surfaces of the Radiocarpal Jt

Answer 7

Distal end of Radius with Scaphoid and Lunate

Question 8

What are the articulating surfaces of the Midcarpal Jts

Answer 8

Between the Proximal and Distal Row of Carpals

Question 9

What are the articulating surfaces of the Intercarpal Jts

Answer 9

Adjacent surfaces of Carpals (between each carpal)

Question 10

What are the articulating surfaces of the Carpometacarpal Jts

Answer 10

Distal row of Carpals and Bases of the Metacarpals

Question 11

Associated Muscle Movements (4)

Answer 11

Wrist Flexors (Flexor Carpi Ulnaris)
Wrist Extensors (Tendons pass over)
Wrist Deviators (Tendons pass over)
Intrinsic Hand Muscles (Palmar Interossei)

Question 12

Which is the most frequently broken bone in the wrist

Answer 12

Scaphoid

Question 13

Which wrist bone is most frequently dislocated

Answer 13

Lunate

Question 14

Characteristics of the Pisiform Bone (4)

Answer 14

Sits anterior to Triquetral (not visible from posterior view)
Only articulates with Triquetral
Acts as a Sesamoid bone for Flexor Carpi Ulnaris
Muscle Attachment (Abductor Digiti Minimi)

Question 15

Characteristics of Trapezium (3)

Answer 15

Saddle shaped for its articulation with MC #1 (forms saddle joint of thumb)
Muscle Attachment (Opponens Pollicis)
Tubercle (Ligament Attachment)

Question 16

Characteristics of Trapezoid

Answer 16

Articulates with MC #2

Question 17

Characteristics of Capitate (3)

Answer 17

Keystone (middle) of Wrist
Largest Carpal
Articulates with MC #3

Question 18

Characteristics of Hamate

Answer 18

Articulates with MC #4 and #5
Muscle Attachment (Flexor Carpi Ulnaris)
Hook (Muscle Attachment: Opponens Digiti Minimi)

Question 19

What do the shape of the Carpal Bones create

Answer 19

A cascade that forms the floor of the Carpal Tunnel

Question 20

What structure covers the Carpal Tunnel

Answer 20

Flexor Retinaculum

Question 21

Which bones anchor the Flexor Retinaculum

Answer 21

Medial Anchor: Hook of Hamate and Pisiform

Lateral Anchor: Tubercles of the Scaphoid and Trapezium

Question 22

Characteristics of Scaphoid (2)

Answer 22

Articulates with the Radius
Muscle Attachment (Abductor Pollicis Brevis)

Question 23

Characteristics of Lunate

Answer 23

Articulates with the Radius

Question 24

Characteristics of Triquetral/Triquitrum

Answer 24

Articulates with Ulna/Disc

Question 25

Which Function do ALL Carpals have in common

Answer 25

Ligament Attachment