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  • Title: Mandibular Nonvascularized Bone Grafts of Critical Sizes and Complex Warfare Defects With Interrami Intraoral Fixation.
    Author: Shuker ST.
    Journal: J Craniofac Surg; 2015 Jun; 26(4):1173-7. PubMed ID: 26080152.
    Abstract:
    The reconstruction of mandibular bone grafts of critical size complex defects and posterior segments malpositioned due to modern warfare injuries is a difficult, challenging task. The condition becomes even more complex if primary reconstruction is carried out inexpertly, which leads to severe disfigurement, rami mesial superior shift, tongue prolapsed, loss of speech, etc.A new interrami intraoral Kirschner wire fixation (IRIF) technique is presented for the reconstruction of large mandibular defects by nonvascularized iliac bone grafts. Twelve symphysis, parasymphysis, and lateral mandibular avulsed or chopped off with bone loss ranging from 5 cm to "ear-to-ear" rami defects underwent nonvascularized iliac bone block graft. A direct stainless steel wire fixation was carried out between bone blocks and original bone. Indirect rigid fixations were applied using a 2-mm horseshoe-shaped K-wire IRIF technique. Two complications were reported: one due to infection and the other due to the mucosa dehiscing where 2 cm of sequestrated bone was removed. The biomechanics (stress/strain distribution and strength) along the K-wire substitute the tension on the alveolar part of the mandible, creating a zone of resistance in the rami zone. This successful bone healing between the mandibular bone and the graft may have resulted from prolonged periods of sufficient stabilization during function of the mandible and bone graft function as one mandible unit during the healing period by IRIF. This new technique is quick, cheap, easy, and well tolerated by the patient for many months without complications and has been successful in modern warfare reconstructions of mandibular bone graft large defects.
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