Original link: https://mp.weixin.qq.com/…
The carpal bones are short bones, totaling 8 in number, located in the proximal part of the hand bones. They are divided into two rows, each containing 4 bones, all named according to their shapes. These include: the proximal row connected to the radius, consisting of the scaphoid, lunate, triquetrum, and pisiform; and the distal row connected to the metacarpals, consisting of the trapezium, trapezoid, capitate, and hamate. (Mnemonic: Scaphoid, Lunate, Triquetrum, Pisiform; Trapezium, Trapezoid, Capitate, Hamate)
Memory mnemonic:
Lunate supports the capitate
Pisiform and trapezoid are anterior, hamate and trapezium are posterior
Trapezium and scaphoid are slanted in the front
X-ray anatomy
Below are the comparison images of the carpal bones in frontal and lateral views to reinforce memory
Images sourced from radiopaedia
Scaphoid
Lunate
Triquetrum
Trapezium
Trapezoid
Capitate
Hamate
Pisiform