Info

17 16 34

34 16 14

17 16 34

34 16 14

"A Right radius and ulna, anterior view

Right ulna and radius, posterior view

BONES OF THE HAND. Ossa manus.

1 CARPUS. The wrist, which is situated between the forearm and metacarpal bones. A B C

2 CARPAL BONES. Ossa carpi (carpalia). The eight wrist bones. A B C

3 Accessory carpal bone (ossicle). [Os centrale]. It is occasionally found between the capitate, scaphoid and trapezoid bones. When present, it is usually fused with the scaphoid. C

4 Scaphoid. Os scaphoideum [[os naviculare]]. Proximal carpal bone situated between the lunate and trapezium bones. A B

5 Scaphoid tubercle. Tuberculum ossis sca-phoidei. Elevation on the anterior surface of the scaphoid. It protrudes visibly with radial abduction of the hand. A

6 Lunate. Os lunatum. Proximal carpal bone located between the scaphoid and triquetrum. A B

7 Triquetrum. Os triquetrum. Proximal carpal bone situated between the hamate and lunate bones, dorsal to the pisiform bone. A B

8 Pisiform. Os pisiforme. Proximal carpal bone residing on the palmar aspect of the triquetrum with which it articulates. It represents a true sesamoid bone within the tendon of the flexor carpi ulnaris. A B

9 Trapezium. Os trapezium [[os multangulum majus]]. Distal carpal bone located between the 1st metacarpal and the scaphoid. A B

10 Tubercle of trapezium. Tuberculum ossis trapezii. Elevation on the palmar side of the trapezium distal to the scaphoid tubercle and radial to the groove for the flexor carpi radialis. A

11 Trapezoid. Os trapezoideum [[os multangulum minus]]. Distal carpal bone positioned between the 2nd metacarpal and the scaphoid and between the trapezium and capitate bones. A B

12 Capitate. Os capitatum. Distal carpal bone centered between the 3rd metacarpal and the lunate bone. A B

13 Hamate. Os hamatum. Distal carpal bone located between the 4th and 5th metacarpals, capitate and triquetrum. A B

14 Hamulus (hook) of hamate. Hamulus ossis hamati. Hook-shaped process on the palmar aspect of the hamate distal to the pisiform bone. A

15 Carpal groove. Sulcus carpi. Palmar concavity between the tubercles of the scaphoid and trapezium on the radial side, and the hamulus and pisiform bone on the ulnar side. A transverse ligament converts it into a closed canal (carpal tunnel) for the flexor tendons of the fingers. A

16 METACARPUS. Region of the hand between the fingers and the wrist. A B

17 METACARPAL BONES I-V. Ossa metacarpi (metacarpalia) [I-V]. A B

18 Base of metacarpal bone. Basis metacarpalis. Proximal, broad end of a metacarpal bone. A B

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