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Calcaneal tuberosity
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The calcaneal tuberosity is a bony prominence found on the underside of the calcaneus. It is formed as the plantar surface of the calcaneus is elevated posteriorly.
The plantar surface of the calcaneal tuberosity projects anteriorly forming two bony projections known as the medial and lateral processes. These are separated by a V-shaped notch.
Several muscular and ligamentous structures originate from or attach to the calcaneal tuberosity:
- the abductor hallucis muscle originating from the medial process of the calcaneal tuberosity.
- the flexor digitorum brevis muscle originating from the medial process of the calcaneal tuberosity.
- the abductor digiti minimi muscle originating from the medial and lateral processes of the calcaneal tuberosity.
- the plantar aponeurosis attaching to the medial process of the calcaneal tuberosity, proximal to the origin of the flexor digitorum brevis muscle.
The calcaneus functions to transfer the weight of the body to the ground and to serve as a lever for the muscles of the leg.
| Terminology | English: Calcaneal tuberosity Latin: Tuber calcanei |
| Definition | The calcaneal tuberosity is a bony prominence found on the underside of the calcaneus. |
Learn more about the calcaneus and its landmarks in the following study unit:
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