Dissection of dorsolateral aspect of left foot and ankle

Relations of tendons of peroneal muscles at ankle with retinacula and tendon sheaths opened, lateral view

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Image #197-5

Dissection of dorsolateral aspect of left foot and ankle

Relations of tendons of peroneal muscles at ankle with retinacula and tendon sheaths opened, lateral view

The superior (11) and inferior (16) peroneal retinacula have been divided and synovial tendon sheaths of the peroneus longus and brevis muscles have been opened. A small peroneus accessorius muscle (13) is present in this specimen.

1. Extensor digitorum longus muscle
2. Peroneus tertius muscle
3. Inferior extensor retinaculum
4. Anterior lateral malleolar artery
5. Extensor digitorum brevis muscle
6. Peroneus brevis muscle
7. Tendo calcaneus
8. Peroneus longus muscle (tendon)
9. Lesser saphenous vein
10. Synovial sheath of peroneal muscles (upper margin of opened sheath)
11. Superior peroneal retinaculum (divided to expose peroneal tendons)
12. Lateral malleolus
13. Accessory peroneus muscle (origin from calcaneus, insertion superiorly on posterior intermuscular septum)
14. Calcaneal branch of peroneal artery
15. Calcaneus
16. Inferior peroneal retinaculum (divided to expose tendons)
17. Abductor digiti minimi muscle
18. Tuberosity of 5th metatarsal bone