Hand/Thumb/Fingers RAD 1 Info Flashcards
How many bones are in the hand?
27
How many bones are in the phalanges?
14
How many bones are in the metacarpals?
5
How many carpals are in the wrist?
8
How many phalanges are there in digits 2-5?
3
How many phalanges are there in the thumb?
2
How are the phalanges named?
by location
What does each phalanx have?
- Head
- Body
- Base
What do the metacarpals compose?
Palm of the hand
The heads of the metacarpals are _____
distal
What do the heads of metacarpals articulate with?
Phalanges
What are metacarpal heads known as?
Knuckles
The metacarpal bases are _____
proximal
What do metacarpal bases articulate with?
Carpals
How many rows of carpals are there?
2 (proximal & distal)
How many carpals are in each row?
4
What carpals are in the proximal row?
(Lateral to Medial)
- Scaphoid
- Lunate
- Triquetrum
- Pisiform
What carpals are in the distal row?
(Lateral to Medial)
- Trapezium
- Trapezoid
- Capitate
- Hamate
What do the Interphalangeal joints articulate?
The phalanges
How many IP joints are there in the thumb?
1
How many IP joints are there in digits 2-5? What are they called?
- 2
- DIP & PIP
What are the interphalangeal joints classified as?
- Synovial
- Diarthrotic
- Freely movable joint
- Hinge type
What do the metacarpophalangeal joints articulate?
The heads of the metacarpals and the proximal phalanges
What are the metacarpophalangeal joints classified as?
- Synovial
- Diarthrotic
- Ellipsoidal type
What do the carpometacarpal joints articulate?
The bases of the metacarpals and the carpal bones
What is the 1st carpometacarpal joint classified as?
- Synovial
- Diarthrotic
- Saddle type
What is the 2nd-5th carpometacarpal joint classified as?
Gliding types
What do the intercarpal joints articulate?
The carpal bones
What are intercarpal joints classified as?
- Synovial
- Diarthrotic
- Gliding type
What do radiocarpal joints articulate?
The carpal and distal radius
What is the radiocarpal joint classified as?
- Synovial
- Diarthrotic
- Ellipsoidal type
What is a bennett fracture?
Fracture at the base of the 1st metacarpal
What is a boxers fracture?
Fracture at the metacarpal neck