1
.
| Ligament of digital sheath |
2
.
| Left pointer: Extensor expansion Right pointer: Location of metacarpophalangeal joint |
3
.
| Dorsal interosseous muscle II (left pointer, insertion into extensor expansion; right pointer, insertion into base of proximal phalanx) |
4
.
| Lumbrical muscle II |
5
.
| Deep transverse metacarpal ligament |
6
.
| Dorsal metacarpal artery II |
7
.
| Anterior interosseous muscle I |
8
.
| Metacarpal II (transected) |
9
.
| Common extensor digitorum muscle (tendon to index finger, transected) |
10
.
| Branch dorsal metacarpal artery I (dorsal digital artery) |
11
.
| Dorsal interosseous muscle I |
12
.
| Adductor pollicis muscle (transverse head) |
13
.
| Superficial palmar arch |
14
.
| Left pointer: Flexor digitorum superficialis (cut) Middle pointer: Flexor digitorum profundus muscle (cut) Right pointer: Lumbrical muscle I |
15
.
| Left pointer: Anterior common digital artery Right pointer: Common palmar digital nerve of median nerve |
16
.
| Fascial septa which extended from palmar aponeurosis (removed) to anterior interosseous fascia and, indirectly, to metacarpal bones |
17
.
| Anterior interosseous fascia |
18
.
| Fascial extension around lumbrical muscle II (incised and reflected to expose "lumbrical canal") |