The shoulder is the most mobile joint in the human body. To accomplish this, the shoulder requires a balance of stability and strength. Shoulder dislocation is a fairly common injury sustained by people of all age ranges. It is generally a sudden onset type of injury, which is caused by trauma to the shoulder region. There are many causes of this type of injury, from athletics to falling from a ladder, and can be sustained throughout the age spectrum. Most dislocations occur as the arm is outstretched to the side or overhead in conjunction with a force pushing the arm backward.