Where is deltoid tuberosity

This tuberosity extends distally on the caudal surface of humerus as the humeral crest. IMAIOS and selected third parties, use cookies or similar technologies, in particular for audience measurement.

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The website cannot function properly without these cookies, which is why they are not subject to your consent. These are cookies intended to measure the audience: it allows to generate usage statistics useful for the improvement of the website. Verify now. Toggle navigation. Institutional subscriptions support Language. Flexion and medial rotation of the arm moves the arm anteriorly, as in reaching forward or throwing a ball underhand.

The lateral fibers abduct the arm by pulling the humerus toward the acromion. Abduction of the arm results in the arm moving away from the body, as in reaching out to the side. Contraction of the posterior fibers extends and laterally rotates the arm by pulling the humerus toward the spine of the scapula.

Extension and lateral rotation moves the arm posteriorly, as in reaching backwards or winding up to throw a ball underhand. By: Tim Taylor. Last Updated: Jul 16, All Rights Reserved. Innerbody Research does not provide medical advice, diagnosis, or treatment. You must consult your own medical professional.