Shoulder injuries, while they are sometimes avoidable by simply resting the shoulder, can lead to chronic pain and restricted movement, which are often characterized by slinginess and an inability to advance in any forward direction. This often results in avoidance of any activity that requires strenuous movement, such as lifting or even sitting down, which can affect both the physical and mental health of the patient and can put a strain on the relationship between the patient and their social network, family and friends.