A dislocated shoulder is a common injury. It means the upper arm bone has popped out of the shoulder socket. This usually happens because of a fall or a sports-related injury.
A dislocated shoulder is painful. It can also cause weakness, bruising, swelling and numbness. In addition, your arm may look like it hangs low on the shoulder.
Doctors often try to fix a dislocated shoulder without surgery. This involves moving the upper arm bone back into the socket. If a dislocation is severe and has caused damage, surgery may be needed.