Peroneal retinacula

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Peroneal retinacula
The mucous sheaths of the tendons around the ankle. Lateral aspect. (Peroneal retinacula not labeled, but region visible at bottom left.)
Latin Retinaculum musculorum peronaeorum
Gray's p.489
Anatomical terminology

The peroneal retinacula (singular: peroneal retinaculum) are fibrous retaining bands which bind down the tendons of the peroneus longus and brevis as they run across the side of the ankle. (Retinaculum is Latin for retainer).

The fibers of the superior retinaculum (external annular ligament) are attached above to the lateral malleolus and below to the lateral surface of the calcaneus.

The fibers of the inferior retinaculum are continuous in front with those of the cruciate crural ligament; behind they are attached to the lateral surface of the calcaneus; some of the fibers are fixed to the peroneal trochlea, forming a septum between the tendons of the Peronæi longus and brevis.

See also[edit]


This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

External links[edit]

  • Anatomy figure: 17:10-10 at Human Anatomy Online, SUNY Downstate Medical Center
  • ankle at The Anatomy Lesson by Wesley Norman (Georgetown University)