Shoulder Dislocation Symptoms & Causes

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What happens when a shoulder dislocates?

Most commonly, the ball of the humerus bone rolls out of the glenoid when the arms are struck while the elbows are held out (i.e. collisions in football).

Dislocation can also happen when:

•   the ball of the humerus is forced backwards.
•   Landing on an outstretched hand to break a fall
•   Direct blow to the front of the shoulder

Shoulder dislocation anterior and posterior

Who is at risk for a shoulder dislocation?

•   Athletes in contact sports, such as football or hockey
•   Athletes in sports that involve frequent falling, such as
    gymnastics, skiing or volleyball
•   Active people between the ages of 18 and 25
•   Older people with weaker ligaments or a greater tendency
    to fall down

What are the symptoms of a shoulder dislocation?

•   A visibly deformed shoulder
•   Swelling or bruising
•   Extreme pain
•   Inability to move the arm
•   Numbness, weakness, or tingling around the neck or down the arm
•   Painful muscle spasms around the shoulder

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