The traumatic amputation of an ear is another circumstance in which this type of staged cartilage reconstruction can be effectively used. The amount of ear loss determines the types and stages of reconstruction needed. If only a small part of the ear is lost from trauma or tumor resection, then helical or rim advancement flaps may be used to reconstruct this portion. If larger sections are lost then a staged reconstruction is necessary. Effective ear reconstruction is dependent upon meticulous surgical technique and careful preoperative planning.