Joints of right wrist and hand

Frontal section, posterior view

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Image #110-7
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Joints of right wrist and hand
Frontal section, posterior view
The joint spaces have been opened by flexion of the wrist and hand. The interosseous intercarpal ligaments have not been cut. The capitate and hamate bones are held together firmly by a strong interosseous ligament.
1 . Base of metacarpal II
2 . Intermetacarpal joint
3 . Trapezoid bone
4 . Extensor pollicis longus muscle (tendon cut obliquely)
5 . Capitate bone
6 . Synovial fold
7 . Collateral carpi radial ligament
8 . Scaphoid bone
9 . Interosseous intercarpal ligament
10 . Radiocarpal joint
11 . Radius
12 . Extensor pollicis brevis muscle (partially tendinous)
13 . Abductor pollicis longus muscle
14 . Palmar metacarpal ligament
15 . Base of metacarpal V
16 . Carpometacarpal joint
17 . Upper pointer: Synovial fold Lower pointer: Extensor carpi ulnaris muscle (tendon)
18 . Intercarpal joint
19 . Triquetral bone
20 . Lunate bone
21 . Collateral carpi ulnar ligament
22 . Distal radioulnar articular disc
23 . Styloid process of ulna
24 . Head of ulna
25 . Distal radioulnar joint (lower pointer, sacciform recess)
26 . Pronator quadratus muscle