Extensor retinaculum (foot)
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At the time the article was created Sachi Hapugoda had no recorded disclosures.
View Sachi Hapugoda's current disclosuresAt the time the article was last revised Maulik S Patel had no recorded disclosures.
View Maulik S Patel's current disclosures- Extensor retinacula
- Extensor retinaculum of the foot
- Superior extensor retinaculum
- Inferior extensor retinaculum
The extensor retinaculum of the foot is the broad ligamentous sheet located at the dorsal aspect of the foot and consists of the superior and inferior extensor retinacula.
Gross anatomy
The superior extensor retinaculum is located proximally to the dorsal aspect of the ankle joint and houses the tibialis anterior, extensor digitorum longus, extensor hallucis longus, and fibularis tertius tendons. It also contains the anterior tibial vessels and deep fibular nerve (the superficial fibular nerve passes superficially to it). It originates at the anterior aspect of the distal fibula and attaches medially to the anterior aspect of the distal tibia1.
The inferior extensor retinaculum is Y shaped and is located distal to the superior extensor retinaculum at the dorsal aspect of the foot. The stem of the retinaculum is attached to the lateral aspect of the upper surface of the calcaneus. It then divides into two bands, a proximal limb, attached medially to the medial malleolus, and a distal limb, attached to the plantar aponeurosis. The proximal limb contains a deep and superficial band. It forms the roof of the anterior tarsal tunnel which contains the tendons of extensor digitorum longus, extensor hallucis longus, tibialis anterior, and fibularis tertius. It also houses the terminal branches of the deep fibular nerve, and also the dorsalis pedis artery1.
References
- 1. Gray's Anatomy: The Anatomical Basis of Clinical Practice, 41e. Churchill Livingstone. ISBN:0702052302. Read it at Google Books - Find it at Amazon
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- Tibialis anterior muscle
- Crural fascia
- Accessory peroneal muscles
- Extensor digitorum longus muscle
- Tibioastragalus anticus of Gruber muscle
- MRI of the ankle (an approach)
- Extensor hallucis longus tendon injury
- Deep peroneal nerve entrapment
- Deep peroneal nerve
- Extensor retinaculum (disambiguation)
- Tarsal sinus
- Anterior ankle tendons (mnemonic)
- Peroneal retinaculum
- Anterior tarsal tunnel
- Subtalar instability
- Ankle extensor compartment injury
- Dorsalis pedis artery
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