Keeping the arm muscles healthy and limber may help prevent issues from injury or overworking. This article discusses the function and anatomy of muscles in the arms, conditions that may affect ...

The humerus bone is located in the upper arm between the elbow and shoulder. It’s the longest bone in the arm, and supports movement in the arm and shoulder. Keep reading to learn more about ...

They’re attached to three different bones in your upper body: Collarbone (clavicle) Shoulder blade (scapula) Upper arm bone (humerus) Your deltoid muscles start near your clavicle and scapula.

Muscles, tendons, and ligaments combine to keep your arm bone in your shoulder socket. They also protect the main shoulder joint, the glenohumeral. About eight shoulder muscles attach to the ...

The scapula is located behind the shoulders. It’s attached to the humerus (the upper arm bone) via a ball-and-socket joint called the glenohumeral joint. Ball-and-socket joints are joints ...

They also help keep the head of the upper arm bone, known as the humerus, in the socket of the shoulder blade, or scapula. This socket is called the glenoid. Rotator cuff injuries are relatively ...