The arm consists of a series of complex joints and bones. When a problem occurs, it affects the ability to move your arm and shoulder, causing discomfort and pain.
As for the anatomy of the shoulder, it consists of three main bones:
- Shoulder (upper arm);
- Clavicle (located in the shoulder-collarbone);
- Shoulder blade (shoulder blade).
- The humerus is located in the scapula, as in the pit. These bones are covered with a layer of cartilage.
The two main joints of the shoulder are the pubic and glomerular appendages. The acromion is located in the upper part of the scapula and clavicle, while the glomerulus is located in the upper part of the humerus and the outer edge of the scapula. This area is known as the shoulder joint, which has the greatest mobility compared to other joints of the body. This is the one that helps the arm to move forward and backward, in a circular direction and up.
The swivel baton also allows the arm to rotate. It connects the head of the humerus to the joint and consists of a network of four muscles and several tendons that cover the head of the humerus. Tendons are the connective tissue of skeletal muscles. When the tendons or muscles around the rotator cuff are damaged or inflamed, raising your hand above your head can be painful or difficult.