Where is the deltoid tuberosity located on the humerus?

Generally, the deltoid tuberosity is located on the lateral mid-portion of the humerus. A detailed analysis is as follows:

The deltoid tuberosity is a bony structure of the upper limb. The muscle fibers of the deltoid gradually converge downward and laterally, inserting onto the lateral surface of the humeral shaft. This insertion point, situated in the middle third of the humerus—approximately at the midpoint of the shaft—is known as the deltoid tuberosity. It serves to anchor the deltoid muscle to the humerus, facilitating muscle contraction and relaxation, maintaining normal shoulder joint movement. Its primary functions include abduction of the shoulder joint and upper arm, and it also contributes to stabilizing the shoulder joint.

In daily life, attention should be paid to proper exercise techniques. Engaging in appropriate physical activity while avoiding intense or excessive exercise can help prevent injury to the deltoid tuberosity.