The shoulder muscles are responsible for maintaining the widest range of motion of any joint in your body. This flexibility is also what makes the shoulder prone to instability and injury.

Your deltoid muscles make up a main muscle group in your upper body. They’re connected with many other muscles and bones in your upper back, neck, and shoulder region and are extremely mobile.

The arm extends from the shoulder to ... and anatomy of muscles in the arms, conditions that may affect the arms, and tips for arm muscle health. All the muscles in the body have different functions.

Posterior shoulder tightness ... tightness of the muscles by myotonometer, skin/subcutaneous tissue thickness may affect the validity of the measurement. Thus, subjects with body mass index ...

The head of your upper arm bone, also called the humerus, fits into the socket of your shoulder blade, or scapula. When you extend your arm out away from your body, the rotator cuff muscles keep ...

Biceps and triceps moves are often the first that come to mind for upper body strength, but it all starts with the shoulders. The shoulder muscles are responsible for a lot of crucial movements ...