Sustentaculum tali
Sustentaculum tali
- Related terms: Sustentaculum tali; Talar shelf
Definition
The sustentaculum tali is a bony shelf formed on the anterior part of the upper margin of the medial surface of the calcaneus bone. It supports the posterior part of the talus bone’s head. It’s superior surface includes the middle talar articular surface, connecting to the middle calcaneal facet on the undersurface of the talus bone. The underside of the sustentaculum tali features a groove for the tendon of the flexor hallucis longus muscle. This tendon passes through the groove on the back surface of the talus and then beneath the sustentaculum tali before entering the foot’s sole. The medial margin of the sustentaculum tali attaches to the spring ligament, fibers from the tibialis posterior muscle, some superficial deltoid ligament fibers, and the medial talocalcanean ligament.
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Text written by Muhammad A. Javaid, MD, PhD © 2023 IMAIOS.
Drake, R.L., Vogl, A.W. and Mitchell, A.W.M. (2009). ‘Chapter 6: Lower Limb’ in Gray’s anatomy for Students. (2nd ed.) Philadelphia PA 19103-2899: Elsevier, pp. 603-604.
MacGregor, R. and Byerly, D.W. Anatomy, Bony Pelvis and Lower Limb: Foot Bones. [Updated 2022 May 29]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2023 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK557447/
