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General Anatomy of the Hand and Wrist Bones

Introduction to Hand and Wrist bone anatomy:

  • Distal to the radius and ulna are twenty-seven bones that form the image descriptionhand (ossa manus).
Anterior View of Right Forearm and Hand Bones
Anterior View of Right Forearm and Hand Bones
Anterior View of Right Forearm and Hand Bones
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Bones of the Hand and Wrist:

  1. Eight small image descriptioncarpal bones (ossa carpi) support the wrist (carpus).
Carpal Bones
Carpal Bones
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  • They are arranged in two rows, each consisting of four bones.
  • The proximal row of carpal bones is convex and two of the bones (scaphoid and lunate) articulates with the concave distal surface of the radius. This junction permits abduction and adduction (side to side) and flexion and extension (front to back) of the wrist join

  1. The concave distal row of carpal bones articulates with the five image descriptionmetacarpal bones (ossa metacarpi), which give support to the palm of the hand.
Metacarpal bones
Metacarpal bones
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  1. Distal to the metacarpals are fourteen phalanx bones or  image descriptionphalanges (ossa digitorum), which support the fingers or digits of the hand.
Phalanges
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  • Each finger is supported by three phalanges, with the exception of the thumb, which is supported by two.
  • The proximal row of phalanges (ossa phalanx proximalis) articulates with the metacarpals and middle row of phalanges (ossa phalanx media). The middle row of phalanges articulates with the proximal and distal rows (ossa phalanx distalis) of phalanges.

Test yourself:

Anterior view:  image descriptionShow/Hide answers

Test yourself
Test yourself
Test yourself on the hand and wrist bones
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