 Hi, I am Dr. Sushal Shantakumar. I am a consultant shoulder surgeon practicing in Manipal Hospital's Bangalore. Shoulder impingement syndrome are also known as the swimmers' shoulder. This is a condition commonly seen in the anger age group. Commonly affects the dominant shoulder, more common in males than the females. What happens here? This is caused by tendons of the rotator cuff, which become impinged or which become pressed by the bones in the shoulder when they pass through a narrow space called the subacromial space.