Osteology: The Hand Flashcards
Bones of the hand
(8) Carpal Bones
(5) Metacarpals
(14) Phalanges
(27) Total
Latin for wrist
Carpus
How are the 8 carpal bones divided?
2 rows of 4
Proximal Bones (Lateral to Medial)
Scaphoid, Lunate, Triquetrum, Pisiform
Sometimes referred to as the navicular
Scaphoid
Includes a tubercle (proximal row)
Scaphoid
Moonshaped
Lunate
Easily palpable
Pisiform
Most common fracture
Scaphoid
Most common disclocation
Lunate
Is a sesamoid bone
Pisiform
Distal Row (Lateral to Medial)
Trapezium, Trapezoid, Capitate, Hamate
Includes a tubercle (distal row)
Trapezium
Which distal bone has an anterior projection called ______, it is easily identifiable.
Hamate. Hook of the hamate.
What is the hook of the hamate a tunnel for?
Ulnar Nerve
What do the carpal bones naturally form?
An anterior concavity
How does flexor retinaculum attach to the carpal bones?
Attaches laterally to the tubercles of the scaphoid and trapezium and medially to the hook of the hamate and pisiform
What does Flexor Retinaculum form?
Carpal tunnel, through structures pass (tendons, nerves)
Describe Metacarpals.
- There are 5
- Base, Shaft, Head
- Head of 1st has sesamoid bones
Describe Phalanges
- 14 Phalanges
- Base, Shaft, Head