The importance of the shoulder is that it is the joint that joins the arm with the trunk and any injury that occurs in it can affect the rest of the body.
To injure yourself in a rotator of the shoulder is one of the biggest fears that an athlete can have. When this occurs, handling weights with the arms becomes very difficult and painful to the point that we have to let it rest.
Although you want to work your trunk muscles, you will see yourself in the situation that the pain is still intense because for those muscles, the weights are also handled with the arms. That’s why it’s important that you know this muscle well to avoid getting injured in it and being able to follow a sport routine without stoppages.
The main joint of the shoulder is the one that joins the head of the humerus with the scapula, it is called the scapular humerus joint. It has two joint surfaces, one of which corresponds to the head of the humerus that has a hemispherical shape and the other is the glenoid cavity of the scapula.
These surfaces are covered by cartilage that allows a smooth and painless movement. On its outside one coating surrounding the soft tissue together, is called joint capsule is reinforced by several ligaments provide stability and prevent the bones from moving beyond its physiological limits.
A group of muscles and their tendons join the surfaces of the bones and make possible the mobility of the joint, among them the rotator cuff is very important. This is formed by 4 muscles that provide mobility and stability to the shoulder. Several transparent structures in the form of a sac called serous bags, allow the smooth sliding of the different moving components.
The shoulder is the articulation with greater amplitude of movements of the human body.
Most common injury
Luxation is the injury in which the bony segments that form a joint separate. Shoulder dislocation, or scapulohumeral dislocation, occurs frequently due to the large range of movements that this joint presents.
Usually anterior dislocation, ie the humeral head is out of its normal position in the glenohumeral hollow scapula and placed in front, making it very difficult and painful any movement which should move these bone elements.
The treatment requires placement by special maneuvers of the flue in its correct place, should never attempt to perform this action by people who are not health professionals.
Precisely this injury is what you have to avoid at all costs. It may take more than a month or even three of zero activity. Therefore, caution when exercising and sudden movements.