You are a flyer for the cheerleading squad. Your base partners miss catching you on a basket toss and you land on the tip of your shoulder. You feel and hear a pop, and have pain near the center of your chest (just to the right of the midline). You are unable to abduct or horizontally adduct
your arm. When you palpate the injury, it feels like there is a lump just to the right of the center of your chest. When you look in a mirror this
lump seems higher and more anterior than the other side. What injury should you suspect?
Acromioclavicular Sprain
Clavicle Fracture
O Glenohumeral Dislocation
Sternoclavicular Sprain