Journal of Rhinology 2013;20(2):96-101.
Published online November 30, 2013.
Radiologic and Histological Study of Healing Process on Malunion Rat Model after Zygomatic Arch Fracture
Dong Kyu Kim, Myeong Jin Kim, Yun Seong Na, Jung Woo Lee, Joong Seob Lee, Chan Hum Park
Department of Otorhinolaryngology-Head and Neck Surgery, Chuncheon Sacred Heart Hospital, Hallym University College of Medicine, Chuncheon, Korea.
협골궁 골절 부정유합 동물 모델에서 치유과정에 대한 방사선학적 및 조직학적 연구
김동규, 김명진, 나윤성, 이정우, 이중섭, 박찬흠
한림대학교 의과대학 춘천성심병원 이비인후-두경부외과학 교실
Background and Objectives
Zygomatic arch fracture should be treated early, because failure of prompt treatment of these injuries November result in significant morbidity, including malar asymmetry, enopthalmos, and sensory deficits. The purpose of this study was to evaluate the radiologic and histological changes of healing process on zygomatic arch fracture with malunion in animal model.
Materials and Method
Ten rats with malunion after zygomatic arch fracture were used in this study. Using micro computerized tomography, we evaluated the defect of fracture site with serial weeks (1, 2, 4, and 8). We also analyzed the histological findings at same period.
The 2-D images were able to assess a difference in recovery process of a bone fracture, but it was too small to be recognized. However, we could find to the definite changes of healing process by using the 3-D reconstructed image according to time sequence. Additionally, fracture sites were healed by primary bone healing process in the zygomatic arch fracture malunion state.
The 3-D image is more useful to evaluate for fracture healing state. Moreover, the proper evaluation and adequate management is necessary even after eight weeks, because healing of fracture was not completed.
Key Words: Zygomatic Fracture;Malunion;Healing;Radiologic;Histological

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