Sternoclavicular injuries are rare. The literature quotes incidence to be 3%. Anterior dislocations of the sternoclavicular joint are much more common than are posterior ones. The ratio of anterior dislocations to posterior dislocations of the sternoclavicular joint of approximately 20 to 1.
Sternoclavicular joint can be mild, moderate, and severe
Mild injury is equivalent to sprain.
The ligaments of the joint are intact. There is mild to moderate amount of pain, particularly with movement of the upper extremity. The joint may be slightly swollen and tender to palpation, but instability is not noted. [Read more...]