When it comes to dislocated shoulders the Anterior variety (forward), as opposed to Posterior (backwards) are the most common by a very large margin. This is most often due to the structure and the motions that are performed by the joint. It is possible to dislocate the Humerus Inferiorly (downwards), but that is very rare. Shoulders are one of the most commonly dislocated joints in the body, and thankfully is not a highly dangerous injury as long as it is dealt with promptly and properly. Below you can visualize a Normal (left), Anterior (middle), and Posterior (Right) dislocation
If you were to suffer this type of injury the outcome and recovery rate are typically improved with resetting as soon as possible. The longer that the joint is not set leads to ligaments and muscles being stretched which in turn leads to weakness of the joint and surrounding musculature. When a joint becomes dislocated it is more likely to become dislocated in the future due to this laxity and weakness.
When it comes to the treatment of this injury it is best to rest the affected arm and not place unnecessary stress on the joint. That is until the tissues have recovered to the point that stability and strengthening exercises can be performed. As stated before, once this injury happens it is more likely to occur again which is why it is imperative to take caution while recovering from this injury. Gentle Chiropractic treatment can assist in the healing process by ensuring that the joint is positioned properly. Another added benefit is that the muscles around the joint are relaxed and have improved function!