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In human anatomy , the carpal bones are the bones of the human wrist .
There are eight of them altogether, and they can be thought of as forming two rows of four.
Proximal Row Scaphoid (or navicular) - this bone, with the lunate, articulates with the radius of the arm. Lunate - articulates with the radius and the capitate. Triquetrum - on the ulnar side of the hand, but does not articulate with the ulna. Pisiform - a sesamoid bone that lies anterior to (closer to the palm than) the triquetrum.
Distal Row Trapezium - the most lateral bone of this row. It articulates with the metacarpal of the thumb . Trapezoid - articulates with the 2nd metacarpal. Capitate - articulates with the metacarpal of the middle finger . Hamate - articulates with the metacarpals of the 4th and 5th fingers. It has a projection called a hook . Mnemonics that can be useful for remembering the carpal bones are:
"S cared L overs T ry P ositions T hat T hey C annot H andle" "S tudents L ike T he P rofessor T o T each C omplex H ypotheses" "S he L ikes T o t ake P rostitutes T o T he C alley H otel" (to take representing the 2 T's of Triquetrum)
See also
Results from FactBites:
Carpal Tunnel Syndrome-Topic Overview (558 words)
Carpal tunnel syndrome is pain, tingling, and other problems in your hand because of pressure on the median nerve in your wrist .
Pressure on the median nerve causes carpal tunnel syndrome.
Carpal tunnel syndrome can cause tingling, numbness, weakness, or pain in the fingers or hand .
eMedicine - Carpal Tunnel Syndrome : Article by David A Fuller, MD (5001 words)
The carpal canal is narrowest at the level of the hook of the hamate, where the canal averages 20 mm in width.
Carpal compression test: Direct application of pressure of 150 mm Hg or even pressure from both thumbs of the examiner is exerted on the patient's carpal canal and is maintained for 30 seconds.
Cross sections of the carpal canal at the levels of the proximal and distal carpal rows are depicted.
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