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Causes. The shoulder joint is the most frequently dislocated joint of the body. Because it moves in several directions, your shoulder can dislocate forward, backward or downward, completely or partially, though most dislocations occur through the front of the shoulder. dislocated shoulder may be caused by: 1  Sports injuries. 2  Shoulder dislocation is a common injury in contact sports, such as football and hockey, and in sports that may involve falls, such as downhill skiing, gymnastics and volleyball. 3  Trauma not related to sports.
Joint dislocations can occur in any of the major joints such as the shoulders, elbows, hips, knees and ankles. Dislocations can also occur in the minor joints of the fingers and toes.he most common symptom of a joint dislocation is pain that occurs after an injury. Other common symptoms associated with joint dislocation include: 1  Joint appears out of place. 2  Joint is swollen. 3  Joint is discolored. 4  Joint is immovable. 5  Intense pain in the joint and/or surrounding area. 6  Tingling near the injury.