舌, 口底, 下顎前方部切除後A. O. Osteosynthesis による下顎部再建について

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We recently experienced a case of malignant tumor for which an immediate mandibular reconstruction by A.O. osteosynthesis and deltopectoral flap was successfully performed following anterior mandibulectomy and dissection of tongue and mouth floor. A. O. osteosynthesis used in the primary operation aimed to attain a plastic reconstruction of the jaw by giving a curve in coincidence with the anterior mandibular portion. However, the incision line on the middle of the jaw was torn by tissue contraction due to too large tissue defect of the mouth floor, so that the secondary operation was performed by exchanging a curved plate to a straight one, resulted in the complete suture.<BR>In addition, for preventing an excess salination as a cause of oral-submental fistula formed in the mouth floor, a continuous tubing with two cut-down tubes was performed into both Stensen canals to keep dryness of the wound. Thus the purpose of reconstruction could be achieved after about 6 months after operation.