completer dscription of carples and meta carples in hands and its attcahemnetas

1. Bones of hand

2. INTRODUCTION
• Anatomically, the hand is defined as the region of the upper
limb distal to the wrist. The base of the hand contains 8 bones, each
known as a carpal bone. The palms of the hands each contain 5
metacarpal bones. The digits contain the phalanges.
•
The skeleton of the hand contains 27 bones which can be divided
into three groups:
• the carpus – 8 carpal bones
• The metacarpus – 5 metacarpal bones
• The phalanges – 14phalangeal bones

4. CARPAL BONES
• The 8 carpal bones are arranged into two rows of four– a proximal and a distal row.
• The proximal row of carpal bones, from the lateral (thumb side) to the medial side is made up of
the following bones:
• Scaphoid
• Lunate
• Triquetrum
• Pisiform
•
• The distal row of carpal bones, laterally to medially is made up of the following bones:
• Trapezium
• Trapezoid
• Capitate
• Hamate

5. Carpal bones (irregularly shaped bones )
The scaphoid bone of the hand is the most commonly
fractured carpal bone

7. Metacarpal Bones
The metacarpal bones articulate proximally with the carpals, and distally with the
proximal phalanges. They are numbered, and each associated with a digit:
Metacarpal I – Thumb.
Metacarpal II – Index finger.
Metacarpal III – Middle finger.
Metacarpal IV – Ring finger.
Metacarpal V – Little finger.

9. Phalanges
• There are 14 phalanges which make up the bones of the fingers and thumbs.
• (thumb) only has two phalanges (proximal and distal) whereas the remaining
digits have three (proximal, middle and distal).
• Like the metacarpals, each phalanx has a base, body and distally, a head. The
base of each phalanx articulates with the head of the metacarpal.
• The most common type of injury to the phalanges are crushing injuries, for
example, closing a door on the digit.

11. THANK YOU