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Evaluation of labial versus labio-inferior lines of osteosynthesis using 3D miniplate for fractures of anterior mandible:A finite element analysis with a pilot clinical trial

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Chinese Journal of Traumatology 2019年第5期22卷 261-269页

作者： Keerthana Ponvel Elavenil Panneerselvam Sasikala Balasubramanian Krishna Kumar Raja V.B. Department of Oral and Maxillofacial Surgery SRM Dental College and HospitalRamapuram CampusRamapuramChennai 600089Tamil NaduIndia

Purpose:The fractures of anterior mandible are subject to severe torsional forces due to muscles acting in opposite directions.3D miniplate has been suggested as a good alternative by some ***,finite element model(FEM)studies indicate that labio-inferior positioning of two miniplates perpendicular to each other offers better stability as compared to labial *** study aims at combining the advantages of a single 3D miniplate and labio-inferior positioning of two conventional miniplates,which was assessed by finite element analysis along with a pilot clinical ***:Two FEM models were created using CT data of a 24-year-old patient with Angie class I occlusion:control model with labial plating and study model with labio-inferior *** models were processed with MIMICS.(materialise,Leuven,Belgium),CATIA.(Dassault Systemes)and finite element analysis *** adopted for analysis were(1)displacement(mm)of fracture fragments during each screw fixation,(2)lingual splay and post fixation stability of fracture fragments with masticatory load,and(3)stress distribution(MPa)across fracture ***,a pilot clinical trial including five patients with anterior mandible fracture was *** fractures were managed by intraoral open reduction and 3D miniplate fixation in labio-inferior *** interfragmentary gap,post fixation lingual splay and radiographic fracture union and complications were assessed ***:Labio-inferior plating demonstrated less displacement(mm)of fracture fragments during screw fixation(0.059 vs.0.079)as well as after application of masticatory load(1.805 vs.1.860).Negligible lingual splay and less stress distribution(MPa)across fracture fragments(1.860 vs.1.847)were appreciated in the study group as compared to control *** trial support the favorable outcome related to intraoperative and postoperative assessment ***:FEM analysis and

关键词： Mandibular fractures Finite element analysis Osteosynthesis 3D miniplate

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External penetrating laryngeal trauma caused by a metal fragment:A Case Report

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World Journal of Clinical Cases 2022年第4期10卷 1394-1400页

作者： Zi-Han Qiu Jin Zeng Qiang Zuo Zhong-Qi Liu Department of Otolaryngology-Head and Neck Surgery the First Affiliated Hospital of Shantou University Medical CollegeShantou 515041Guangdong ProvinceChina Department of Otolaryngology Head and Neck Surgery Peking University Third HospitalBeijing 100191China

BACKGROUND Although external penetrating laryngeal trauma is rare in the clinic,such cases often result in a high mortality *** early recognition of injury,protection of the airway,one-stage laryngeal reconstruction with miniplates and interdisciplinary cooperation are important in the treatment of such *** SUMMARY A 58-year-old male worker sustained a penetrating injury in the left *** computed tomography scanning at a local hospital,he was transferred to our hospital,where he underwent tracheotomy,neck exploration,extraction of the foreign object,debridement and repair of the thyroid cartilage using titanium *** endo laryngeal stent was inserted,which was removed 12 days *** patient recovered well and his voice rapidly improved after *** Penetrating laryngeal trauma is *** successfully treated a patient with early laryngeal reconstruction and management by interdisciplinary cooperation.

关键词： Laryngeal trauma Reconstructive operation miniplate Multi-discipline cooperation Computed tomography Case report

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