1
.
| Deep transverse metacarpal ligament |
2
.
| Lumbrical muscle I |
3
.
| Anterior interosseous muscle I |
4
.
| Anterior interosseous fascia |
5
.
| Dorsal interosseous muscle I |
6
.
| Adductor pollicis muscle (oblique head, divided) |
7
.
| Muscle fascicle with origin from shaft of first metacarpal and insertion on base of first phalanx (independent of deep head of flexor pollicis brevis and comparable to anterior interosseous muscles; frequently referred to as first anterior interosseous muscle) |
8
.
| Princeps pollicis artery |
9
.
| Flexor pollicis brevis muscle (deep head, dissected) |
10
.
| Muscular branch of ulnar nerve (to dorsal interosseous muscle I) |
11
.
| Muscular branch of ulnar nerve (to oblique head of adductor pollicis muscle and deep part of flexor pollicis brevis muscle) |
12
.
| Metacarpotrapezial joint capsule |
13
.
| Transverse carpal ligament |
14
.
| Anterior carpal rete |
15
.
| Flexor carpi ulnaris muscle (tendon of insertion) |
16
.
| Pisiform bone (covered by ligament) |
17
.
| Muscular branch ulnar artery |
18
.
| Pisometacarpal ligament |
19
.
| Branch perforans (from recurrent carpal branch of deep anterior arch) |
20
.
| Deep branch of ulnar nerve |
21
.
| Deep palmar arch |
22
.
| Adductor pollicis muscle (transverse head, near origin) |
23
.
| Upper pointer: Dorsal interosseous muscle III Lower pointer: Anterior interosseous muscle II |
24
.
| Metacarpal V |
25
.
| Anterior accessory ligament |
26
.
| Digital fibrous sheath (transected, flexor tendons removed) |