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Bassett Collection of Stereoscopic Images of Human Anatomy

Dissection of dorsolateral aspect of left foot and ankle

Synovial sheath of extensor tendons

Image #197-3

KEYWORDS: Ankle, Fascia, Foot and toes, Muscles and tendons.

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Higher resolution images are available for a fee. Contact Drew Bourn, PhD, MLIS.

Dissection of dorsolateral aspect of left foot and ankle
Synovial sheath of extensor tendons
Air has been injected into the synovial sheath (5) of the long extensor tendons of the toes to distend the portion of this sheath that extends distal to the inferior extensor retinaculum (11). The specimen is viewed from an anterolateral direction.
1 . Dorsal intermediate cutaneous nerve
2 . Dorsal medial cutaneous nerve
3 . Extensor digitorum longus muscle (tendons covered by extensor retinaculum)
4 . Extensor hallucis longus muscle
5 . Tendinous sheath of extensor digitorum pedis longus muscle (inflated)
6 . Extensor hallucis brevis muscle
7 . Deep peroneal nerve
8 . Dorsalis pedis artery
9 . Extensor digitorum longus muscle (tendons of insertion)
10 . Lesser saphenous vein
11 . Inferior extensor retinaculum
12 . Lateral malleolus
13 . Calcaneal branch of lateral sural nerve
14 . Dorsal lateral cutaneous nerve
15 . Peroneus longus muscle (tendon covered by inferior peroneal retinaculum)
16 . Abductor digiti minimi muscle
17 . Peroneus brevis muscle (tendon)
18 . Extensor digitorum brevis muscle
19 . Peroneus tertius muscle (tendon of insertion)
20 . Tuberosity of 5th metatarsal bone
21 . Fascia of dorsalis pedis
22 . Extensor digitorum brevis muscle (tendons)