The carpometacarpal (CMC) joints are five joints in the wrist that articulate the distal row of carpal bones and the proximal bases of the five metacarpal bones. The CMC of the thumb or the first CMC, also known as the trapeziometacarpal joint (TMC), differs significantly from the other four CMCs and is therefore described separately. == Thumb == ...
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http://en.wikipedia.org/wiki/Carpometacarpal_joint
(from the article `bird`) ...small wrist bones are present: the radiale, or scapholunar, and the ulnare, or cuneiform. The former lies between the distal end of the radius and ... ...two individuals are alike, and in humans the patterns are used for identification. The thumb is usually set at an angle distinct from the other ... ...a...
Found on
http://www.britannica.com/eb/a-z/c/28
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