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What is a deltoid tuberosity?

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Quick Answer

The deltoid tuberosity is the oblong vertical section of the lateral surface on the mid-humeral shaft, notes anatomyExpert. This area is the attached part of the deltoid muscle.

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Full Answer

According to anatomyExpert, the deltoid tuberosity looks like the Greek letter delta, which is shaped like a triangle. The word tuberosity comes from the Latin word "tuber," meaning lump. The last part of the word, "osity," translates to many or a lot. Therefore, the word means many lumps. Tuberositas deltoidea is the Latin term for deltoid tuberosity, while the French term is tuberosite deltoidienne.

Wikipedia states that the deltoid tuberosity is created due to endochondral ossification during a two-part process. The first part is dependent on tendons, while the next part is based on muscle. The humerus in mammals has many morphological variations. The size of different areas, such as the greater cubicle, deltoid cubicle and medial epicondyle, are key to the animal's habitat and movement. In some animals, the deltoid tubercle is a quarter down the shaft, which means the limb extension is not very strong. When it comes to animals that can swim, the tubercle is almost halfway down the shaft, which means the extension of the limbs is very strong.

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