What is the deltoid used for?

The deltoid muscle is the main muscle of the shoulder and has three different parts. The deltoid muscle is responsible for various shoulder movements such as abduction (lifting arms from the side), flexion (lifting the arm forward), and extension (lifting the arm backward). It also helps to stabilize the shoulder joint and assist with internal and external rotation.

Each part of the deltoid muscle has its specific action and function:

* Anterior Deltoid: It flexes the shoulder joint and is involved in overhead arm movements.

* Lateral Deltoid: It abducts the shoulder joint and helps to stabilize the shoulder. This portion gives the shoulder its rounded shape.

* Posterior Deltoid: It extends the shoulder joint and assists with external rotation.

The deltoids are used in many everyday activities, such as lifting objects, reaching overhead, and pushing and pulling. They are also important for sports and other physical activities that require arm movement.