REMSTARBC.ca    Rural Emergency Medicine Simulation Training and Resource - British Columbia
Shoulder Dislocation is a common ER presentation. Fortunately because of the 'ball and plate' nature of the shoulder joint, reduction is usually not complicated. Which is why there are a variety of methods employed for shoulder reduction. As outlined in the Power Point below, it is wise to be familiar with a few of the techniques.
Below are videos on the various techniques for shoulder reduction.  These are in the Power Point above, but are here for ease of access.

The following You Tube video is a talk by Neil Cunningham which outlines Shoulder Dislocation.
It is 37 minutes long.