Shoulder joints have the advantage of being highly mobile, meaning it can move in all different directions. However this is also a disadvantage because the joint can be easily dislocated. Dislocations can be either partial or complete, both of which result in pain and instability of the shoulder. Treatment requires that a physician place the shoulder back in to place. The physician may also require a period of immobilization or rehabilitation. Frequent dislocations may require the patient to seek surgical treatment.