What bones muscles or joints are in these areas and what type of diagnostic technique could be used

Bones, Muscles, and Joints
You are at a sports complex that has several events going on to include soccer, lacrosse, basketball and football. as you walk around and stop at the different games you spot different incidents occur that require the player t leave the field. these include a player holding there arm/shoulder, one unable to put weight on their foot/leg, one holding the area around the buttocks/upper thigh, one is holding the side of his head, and one is holding these stomach/side. knowing what you know now about the bones, muscles and joints discuss in detail, what bones muscles or joints are in these areas and what type of diagnostic technique could be used