Because of their agility, shoulder joints are offering us movement in all directions which gives us the opportunity to do a number of different activities. Just when simething seriously goes wrong, we can comprahend the importance of a healthy shoulder. The shoulder injuries happend most often because of the joint instability. Throwing sports additionally pressure the already unstable joint which improves the possibility of injury. Handball is a dynamic sport with a lot of harsh contact. Playing handball without throwing the ball is not a possibility, however the movement of throwing the ball is the most common cause of injury. With repeated movement of throwing, the outside rotators are under a lot of pressure, which are streching and becoming stronger, while inside rotators are becoming weaker and shorter. The person cannot feel that, but with the longer period of repeating this movement, the GRID happens, defined as difference between interior and exterior rotation. GRID is not the cause of ilness, it is its result, which can mostly be seen on the damaged rotator cuff. Big role in all of this has the notion of prevention, with most important point being the realisation of problem, and then by diagonsticing deciding if it is needed to start intervention. Multidisciplinary approach towards whole process is incredebly important, because of the width of the specialisation it is possible to get a number of different opinions on the same issue with the person being in the middle of focus with the highlighted importance of keeping the patient informed on everything that is going on.