Upper Limb - Wrist/HandThis is a featured page


Wrist / Hand

Carpal Bones

  • Are arranged in two rows of four (lateral to medial): Scaphoid, Lunate, Triquetrum, Pisiform, Trapezium, Trapezoid, Capitate, and Hamate (mnemonic device: Sandra Likes To Pat Tom's Two Cold Hands). (Trapezium precedes trapezoid alphabetically.)
Proximal row (lateral to medial): scaphoid, lunate, triquetrum, and pisiform
  • Except for the pisiform, articulates with the radius and the articular disk (the ulna has no contact with the carpal bones). The pisiform is said to be a sesamoid bone contained in the flexor carpi ulnaris tendon.
Distal row (lateral to medial): trapezium, trapezoid, capitate, and hamate

Metacarpals

  • Are miniature long bones consisting of bases (proximal ends), shafts (bodies), and heads (distal ends).
  • Heads form the knuckles of the fist.

Phalanges

  • Are miniature long bones consisting of bases, shafts, and heads. The heads of the proximal and middle phalanges form the knuckles.
  • Occur in fingers (three each) and thumb (two).


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AndyC
AndyC 		Latest page update: made by AndyC , Jun 25 2011, 6:10 AM EDT (about this update About This Update AndyC Moved from: Skeletal System - AndyC

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Keyword tags: gross anatomy wrist
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