Uso do retalho osteocutaneo microcirúrgico de fíbula na reconstru？？o dos defeitos complexos de mandíbula

background: free fibular osteocutaneous flap is the first choice for segmental mandible and contiguous soft-tissue defect reconstructions in most situations. objective: this study presents a four-year experience with free fibular osteocutaneous flap for mandibular reconstruction. methods: an analysis of 15 patients underwent to microsurgical reconstruction of the mandible and oral floor, with a fibular osteocutaneous flap was performed. the mean follow-up after surgery was 2 years. we studied the histopathological classification of primary tumor, location of the resected mandibular portion, vessels used for the anastomosis, associated flap, exposition to radiation, results and complications. results: the most common histological type was squamous cell carcinoma (81%) followed by osteosarcoma (13%). the mandibular portion resected with greater frequency was the central arc in 81% of patients; 87% of patients were exposed to radiation in the preoperative or postoperative. reconstruction was immediate in 81% of cases. pedicled or free flaps associated were used in 46%. immediate complications were observed in 25% of patients and late complications, in 31%, with a success rate of 100%. conclusions: the osteocutaneous free fibula flap is indicated in reconstruction of large mandibular defects, especially of its central portion. the procedure indications must be individualized, taking into account risks and benefits, as well as its impact on quality of life of patients.