Your deltoid muscles start near your clavicle and scapula. The end of the muscles, or insertion point, attaches near your humerus. There are other muscles and joints that support the deltoids ...

Medically reviewed by Oluseun Olufade, MDFact checked by Marley Hall The deltoid muscle is the main muscle of the shoulder. It helps move your upper arm and stabilizes the shoulder joint.

The anterior deltoid muscle arises from the clavicle, or collar bone, and the scapula, or shoulder blade. The deltoid attaches to the humerus (arm bone). The anterior part of the deltoid raises ...

The clavicle, humerus, and scapula serve as attachment points for their tendons. Working out the deltoid muscles in your shoulders will help you avoid shoulder injuries, build a better posture and ...

The deltoid is a large muscle responsible for lifting the arm and giving the shoulder its range of motion. Pain in this area may be due to issues like overuse or injury. It is located in the ...

The deltoid muscles consist of three parts: the anterior (front) deltoid, lateral (medial) deltoid, and posterior (back) deltoid. The anterior deltoid makes up the front head of the shoulder ...

Muscle tissue also tends to keep vaccine reactions localized. Injecting a vaccine into the deltoid muscle may result in local inflammation or soreness at the injection site. If certain vaccines ...