Carpus video

There are 8 bones which form the carpus and they arranged in two rows of bones. We have the proximal row and a distal row. The proximal row consists of the following bones you have scaphoid, the lunate, the triquetrum and the pisiform. The distal row of bones consists of the following. You have the trapezium, trapezoid, capitate and hamate.

The scaphoid is the most lateral of the bones of the proximal row. It is the largest. It has a rounded tubercle which is called the tubercle of  the scaphoid. The lunate is next to scaphoid from lateral to medial. And it is semilunar in shape. The triquetrum is sandwiched between the lunate and the pisiform.  The pisiform looks like a pea. It is a big sesamoid bone. It is the most medial of proximal row of carpal bones. The trapezium is the most lateral of the distal row of carpal bones. It has a tubercle at its ventral aspect and a grove. The trapezoid is the next bone to the trapezium. The capitate is the most central of all carpal bones and it is the largest. It articulates with metacarpal III. Hamate is cuneiform in shape. It is provided with a hook of hamate by which it articulates with metacarpal V through ligaments.

 


Carpus video

 

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