Metacarpals Flashcards
1
Q
Which muscles attach to metacarpals?
A
Interossei muscles
2
Q
Parts of metacarpal?
A
- Base (proximal)
- Shaft
- Head (distal)
3
Q
Name the fractures of metacarpals?
A
- Boxer’s fracture
- Bennet’s fracture
4
Q
What is boxer’s fracture?
A
Fracture of 5th metacarpal neck (little finger)
-when clenced fist strike a hard object
-distal part of fracture is displaced anteriorly
-shortened affected finger
5
Q
What is Bennet’s fracture?
A
- Fracture of 1st metacarpal base (thumb)
-Caused by forced hyperabduction of thumb
By abductor pollicis longus
6
Q
Name the surfaces of metacarpal bones?
A
3 surface:
1. Posterior
2. Lateral
3. Medial
7
Q
The knuckle of hand is formed by which portion of metacarpal?
A
Head when it articulates with proximal phalanx
8
Q
Which metacarpal bone is the shortest and most mobile? What is it position?
A
The 1st metacarpal bone of the thumb
- Anterior ( not in same plane as other)
9
Q
Each hand has how many phalanges?
A
14
