Carpal bones and Pathology. SNUFF BOX

Learn the carpal bones and common pathology as well as the snuff box (border and contents)

#18

Lunate Bone

#19

Pisiform bone

#20

Triquetral bone

#21

Hamate Bone

#22

Hamulus or hook of hamate bone

#3

Scaphoid bone

#4

Capitate bone

#5

Trapezium

#6

Trapezoid bone

#4

Lunate

#5

Triquetral

#6

Capitate

#7

Hamate

#15

Scaphoid

#16

Trapezium

#17

Trapezoid bone

What carpals are categorized as “Proximal carpal row”

Pisiform, Triquetrum, Lunate, Scaphoid

What carpal bones are considered “distal carpal row”

Trapezium, Trapezoid, Capitate, Hamate

Anatomical snuffbox is made up of what?

Extensor pollicis brevis, Extensor pollicis longus, Abductor pollicis longus tendons, (1st dorsal compartment)

Borders of anatomical snuffbox?

Medial - Extensor pollicis longus tendon

Lateral - Extensor pollicis brevis & Abductor pollicis longus tendon

Proximal - Styloid process of radius

Floor - carpal bones; scaphoid & trapezium

Contents of snuffbox?

Radial artery, Superficial branch of radial nerve, Cephalic vein

Wrist drop is what kind of nerve injury?

Radial Nerve

What kind of nerve injury is ape hand

Median nerve

What kind of nerve injury causes claw hand?

Ulnar nerve