The sustentaculum tali is a bony projection on which bone?

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Boost your medical vocabulary with the Semmelweis Medical Terminology Test. Access multiple choice questions with detailed explanations to enhance your knowledge and confidence. Prepare efficiently with flashcards and interactive quizzes!

Multiple Choice

The sustentaculum tali is a bony projection on which bone?

Explanation:
Sustentaculum tali is a medial shelf-like projection on the calcaneus (heel bone). It supports the talus from below, provides a groove for the flexor hallucis longus tendon, and serves as the attachment point for the plantar calcaneonavicular (spring) ligament that helps maintain the foot’s arch by connecting the calcaneus to the navicular. Because this feature belongs to the calcaneus, the correct bone is the calcaneus. The other bones listed do not have this projection—the talus sits atop the calcaneus, while the navicular and cuboid are separate tarsals with different surfaces and attachments.

Sustentaculum tali is a medial shelf-like projection on the calcaneus (heel bone). It supports the talus from below, provides a groove for the flexor hallucis longus tendon, and serves as the attachment point for the plantar calcaneonavicular (spring) ligament that helps maintain the foot’s arch by connecting the calcaneus to the navicular. Because this feature belongs to the calcaneus, the correct bone is the calcaneus. The other bones listed do not have this projection—the talus sits atop the calcaneus, while the navicular and cuboid are separate tarsals with different surfaces and attachments.

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