One stage microvascular mandible reconstruction by using scapula chimeric flap combined with computer-aided-design and computer-aided-manufacturing plate including bilateral alloplastic TMJ prosthesis: A case report.

This report focuses a defect comprising the complete mandible due to osteonecrosis, including both condyles, that required bilateral temporomandibular joint (TMJ) reconstruction with complete mandibular corpus using a computer-aided-design and computer-aided-manufacturing(CAD-CAM) planning to harvest a scapula chimeric free flap combined with plate including bilateral alloplastic TMJ prosthesis. This procedure was realized in one and the same surgery. A 73 year-old-man developed an osteoradionecrosis of the total mandible including both condyles after radiation therapy for a squamous cell carcinoma of the tongue base(cT4aN2bM0G3). A CAD-CAM reconstruction was planned with a plate extended by bilateral individual TMJ prosthesis, individual fossa components and combined with a composite free flap originating from the subscapular vessel system including scapula(circumflex subscapular artery) for reconstruction of the mandibular corpus which was osteotomized in three segments with a resection guide, the parascapular skin paddle (descending branch of circumflex subscapular artery) for compensation of the soft tissue deficiency of the cervical skin and latissimus dorsi muscle(thoracodorsal artery) for the inner mucosal lining and intraoral reconstruction. The subscapular artery was anastomosed to the external carotid artery and two concomitant veins were sutured end-to-side to the internal jugular vein. The patient was discharged without feeding tube and tracheostomy. No complications have been observed after 6 months follow-up. The patient was able to tolerate soft diet and had comprehensible speech. Thus, a total mandibular reconstruction including both condyles using alloplastic and autoplastic reconstruction in one and the same stage is a valid option and may be considered in comparably severe cases.