What is Mal-union?
When a fracture occurs in the bone the body undergoes a natural healing process to unite the bone segments. A bone is considered healed when it is strong enough to return to normal activities without complications. Depending on many factors, healing a fracture can take anywhere from 4 weeks to 6 months. A malunion happens when the bone heals in an abnormal position. It can cause deformities in length, angulation, rotation, and translation. Most often we see mal-unions in large bones of the limbs such as the femur, tibia, humerus and forearm bones.