Bones Of The Hand Flashcards
What are the carpal bones of the proximal row (lateral to medial)?
Scaphoid
Lunate
Triquetrum
Pisiform
(**Remember: Some Lovers Try Positions That They Can’t Handle)
What is different about the pisiform carpal bone?
It is a sesamoid bone, formed within the tendon of the flexor carpi ulnaris.
What are the carpal bones of the distal row (lateral to medial)?
Trapezium (by the thumb)
Trapezoid
Capitate
Hamate
(**Remember: Some Lovers Try Positions That They Can’t Handle)
What is special about he hamate carpal bone?
Is has a projection on its palmar surface called the hook of hamate
Name all the bones of the wrist (carpal bones)
Scaphoid Lunate Triquetrum Pisiform Trapezium Trapezoid Capitate Hamate
(**Remember: Some Lovers Try Positions That They Can’t Handle)
Which bones of the wrist articulate with the radius to form the wrist joint?
Scaphoid and lunate
Which Carpal bone articulates with the 1st metacarpal bone?
Trapezium
Which Carpal bone articulates with the 2nd metacarpal bone?
Trapezoid
Which Carpal bone articulates with the 3rd metacarpal bone?
Capitate
Which Carpal bone articulates with the 4th metacarpal bone?
Hamate
Which Carpal bone articulates with the 5th metacarpal bone?
Hamate
What are the two most common fractures in the carpal bones?
Scaphoid and lunate (usual mechanism being FOOSH)
What are the classical clinical features of a scaphoid fracture?
Pain and tenderness in the anatomical snuffbox
What is different about the blood supply to the scaphoid Carpal bone and what is the significance of this?
The arterial blood runs distal to proximal, meaning that fractures need to be repaired quickly as the blood supply to the proximal part of the bone can be cut off=avascular necrosis
If someone has a missed scaphoid fracture, what might they go on to develop later in life?
Wrist arthritis
