Dislocated elbow

DEFINITION

A dislocated elbow occurs when the bones that make up the joint are forced out of alignment — typically when you land on an outstretched hand during a fall. The elbow is the second most commonly dislocated joint after the shoulder in adults, and the most commonly dislocated joint in children.

 

Toddlers may experience a dislocated elbow, sometimes known as nursemaid’s elbow, if they are lifted or swung by their forearms.

If you or your child has a dislocated elbow, seek immediate medical attention. Complications can occur if the dislocated elbow pinches or traps the blood vessels and the nerves that serve the lower arm and hand.

A dislocated elbow can usually be realigned without surgery. However, if your elbow is also fractured, you might need surgery.

CAUSES

In adults, the most common causes of a dislocated elbow include:

  • Falls. Falling onto an outstretched hand can pop the upper arm bone out of alignment within the elbow joint.
  • Motor vehicle accidents. The same type of impact can occur when passengers in motor vehicle accidents reach forward to brace themselves before a collision.
  • In children or teenagers, falling onto an outstretched hand is also a common cause of a dislocated elbow.

In toddlers, the injury often occurs when an extra pulling motion is applied to an outstretched arm. The causes of such injuries include:

  • Improper lifting. Trying to lift or swing a young child by the arms can cause the elbow to dislocate.
  • Sudden pulling. Having the child suddenly step off a curb or stairstep as you’re holding his or her hand can pull the elbow out of alignment.

SYMPTOMS

Signs and symptoms of a dislocated elbow include:

  • Extreme pain
  • Obvious distortion of the joint
  • Toddlers with nursemaid’s elbow might experience pain only when the affected elbow is moved. A child often avoids using the arm and holds it slightly flexed next to the body.
  • Sometimes, the elbow is only partially dislocated. Partial dislocation can cause bruising and pain where the ligaments were stretched or torn.

When to see a doctor

Seek immediate medical attention if you or your child has extreme pain or obvious distortion of the elbow joint.