Dissection of dorsolateral aspect of left foot and ankle

Dorsal metatarsal arteries; dorsal interosseous muscles, viewed from above

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Image #198-3
Bassett ImageDiagram Image
Legend Image
Dissection of dorsolateral aspect of left foot and ankle
Dorsal metatarsal arteries; dorsal interosseous muscles, viewed from above
The dorsal interossei have been separated slightly from their bony origins to expose the metatarsal arteries. In this foot these vessels spring largely from the perforating arteries rather than from the arcuate artery (12) which is extremely small.
1 . Extensor expansion
2 . Plantar digital artery
3 . Dorsal digital artery
4 . Tendon of extensor digitorum longus muscle
5 . Tendon of extensor digitorum brevis muscle
6 . 1st-4th dorsal interosseous muscles
7 . Dorsal metatarsal arteries
8 . 5th metatarsal bone
9 . Fascial expansion covering metatarsophalangeal joint
10 . Extensor hallucis longus muscle (accessory tendon also present)
11 . Perforating branch of plantar metatarsal artery
12 . Upper pointer: Deep plantar branch of dorsalis pedis artery Lower pointer: Arcuate artery
13 . Dorsalis pedis artery