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Mechanism of Shoulder Injury in Automobile Collision
Depicts injury to the shoulder in a motor vehicle accident. Shows a woman inside a car with both hands locked on the steering wheel. Arrows indicate force transfers through the steering wheel traveling to the shoulder. Compares a normal shoulder joint with a posteriorly dislocated shoulder with tearing of the acromioclavicular (AC) joint capsule. Labels: clavicle, humerus, scapula, acromion, acromioclavicular capsule, and capsular tear.