Carpal bone
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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.
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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.
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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:
- "Some Lovers Try Positions That They Cannot Handle"
- "Students Like The Professor To Teach Complex Hypotheses"
- "She Likes Taking Prostitutes To The Calley Hotel"
- "She Looks Too Pretty Try To Catch Her"
A Hindi version which is quite funny and hence popular among students in India, is:
- "Sneh Lata Tinde Paka Tere Tinde Catchey Hain"
which can be roughly translated as an exhortation to a woman called Sneh Lata, asking her to properly cook a vegetable!
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