Fracture malunion literally means that a bone has healed in a crooked position. In children, oftentimes, malunions are "acceptable" if the fracture crookedness is not causing any pain or loss of function. This is because if the fracture is close enough to the growth area, as the child grows he/she will grow the bone straight through the bone's ability to remodel. In some children, a crooked bone will not improve its alignment, and in the current state, it is either painful or causing functional problems. In that case, your COA surgeon can talk to you about options that are available to straighten the bone if such a surgery is required.