Bone resorption after maxillary reconstruction with the vascularized free iliac flap |
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| Affiliation: | 1. Department of General Dentistry II, Peking University School and Hospital of Stomatology, Beijing, China;2. Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, China;1. Division of Plastic and Craniofacial Surgery, Hospital de Clínicas de Porto Alegre, Rio Grande do Sul Federal University, Porto Alegre, Brazil;2. Department of Radiology, Hospital de Clínicas de Porto Alegre, Rio Grande do Sul Federal University, Porto Alegre, Brazil;3. School of Design, Rio Grande do Sul Federal University, Porto Alegre, Brazil;4. School of Medicine, Rio Grande do Sul Federal University, Porto Alegre, Brazil;1. Oral and Maxillofacial Surgery, University of Texas at Houston, Houston, TX, USA;2. Private Practitioner, Neurosurgery One, Denver, CO, USA;1. Division of Plastic and Maxillofacial Surgery, Children’s Hospital Los Angeles, Los Angeles, CA, USA;2. Keck School of Medicine, University of Southern California, Los Angeles, CA, USA;3. Division of Hematology–Oncology, Cancer and Blood Disease Institute, Children''s Hospital Los Angeles, Los Angeles, CA, USA;4. Division of Oral and Maxillofacial Surgery, University of Southern California, Los Angeles, CA, USA;1. Institute of Maxillofacial Surgery, Teknon Medical Center, Barcelona, Spain;2. Department of Oral and Maxillofacial Surgery, Universitat Internacional de Catalunya, Sant Cugat del Vallès, Barcelona, Spain;1. Clinical fellow, Craniofacial Research Center, Chang Gung Memorial Hospital, Taoyuan; Department of Craniofacial Orthodontics, Chang Gung Memorial Hospital, Taipei, Taiwan;2. Graduate student, Craniofacial Research Center, Chang Gung Memorial Hospital, Taoyuan; Department of Craniofacial Orthodontics, Chang Gung Memorial Hospital, Taipei; Graduate Institute of Dental and Craniofacial Science, College of Medicine, Chang Gung University, Taoyuan, Taiwan;3. Professor, Craniofacial Research Center, Chang Gung Memorial Hospital, Taoyuan; Department of Craniofacial Orthodontics, Chang Gung Memorial Hospital, Taipei; Graduate Institute of Dental and Craniofacial Science, College of Medicine, Chang Gung University, Taoyuan, Taiwan;4. Professor, Craniofacial Research Center, Chang Gung Memorial Hospital, Taoyuan; Graduate Institute of Dental and Craniofacial Science, College of Medicine, Chang Gung University, Taoyuan; Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital, Linkou, Taiwan |
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| Abstract: | The aim of this study was to evaluate the resorption of the iliac bone after maxillary reconstruction with a vascularized free iliac flap. Twenty-seven patients with maxillary defects who underwent maxillary reconstruction with the vascularized free iliac flap between January 2017 and January 2021 were included. Computed tomography (CT) images taken at 1 week, approximately 6 months, and 1 year after the surgery were used for evaluation. The total iliac bone thickness and height, cortical bone thickness, and cancellous bone density were measured in the CT images. Compared with 1 week after the surgery, the total thickness and height of the iliac bone were reduced significantly 1 year after the surgery, and the cortical bone thickness and cancellous bone density were reduced significantly at 6 months and 1 year after the surgery. Compared with 6 months after the surgery, cancellous bone density was reduced significantly 1 year after the surgery. In conclusion, during the first year after maxillary reconstruction with a vascularized free iliac flap, there was significant resorption of iliac bone, including the total iliac bone thickness and height, the cortical bone thickness, and the cancellous bone density. |
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| Keywords: | Maxilla Ilium Cortical bone Cancellous bone Bone resorption |
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