Department of hand surgery & Microsurgery.

Aneurysmal Bone Cysts (ABC)

What Are Aneurysmal Bone Cysts (ABC)?

An Aneurysmal Bone Cyst is a benign tumor found inside of bone. Usually, these tumours occur in the hand or in the long bones of the extremities including the humerus (arm bone), femur (thigh bone) and tibia (shin bone). 3%-5% of ABC (not harmful) tumours are seen in the hand.

The most common signs of an ABC include:

  • No symptoms whatsoever.
  • Thickening of a finger.
  • Pain after an injury.

Most commonly occur in the second decade of life. Males and females are equally affected . It most commonly involves the bone between wrist and finger ( Metacarpals). Most ABCs behave without aggression. Soft tissue extension is uncommon.

Treatment and Monitoring

Typically, ABCs of hands are treated by curettage and bone grafting. Bone grafting may be done in the same sitting or as a second procedure .