extensor retinaculum of ankle


extensor retinaculum of ankle

1. The superior extensor retinaculum, a band crossing the extensor tendons of the foot and attached to the lower portion of the tibia and fibula.2. The inferior extensor retinaculum, a band located on the dorsum of the foot. It consists of two limbs having a common origin on the lateral surface of the calcaneus. The upper limb is attached to the medial malleolus; the lower limb curves around the instep and is attached to the fascia of the abductor hallucis on the medial side of the foot. See also: retinaculum