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Correlation between condylar fracture Pattern after Parasymphyseal Impact and Condyle Morphological Features： A Retrospective Analysis of 107 Chinese Patients

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Chinese Medical Journal 2017年第4期130卷 420-427页

作者： Lu Han Ting Long Wei Tang Lei Liu Wei Jing Wei-Dong Tian Jie Long State Key Laboratory of Oral Diseases Sichuan University Chengdu Sichuan 610041 China Department of Oral and Maxillofacial Surgery West China School of Stomatology Sichuan University Chengdu Sichuan 610041 China

Background： The treatment of the condylar fractures is difficult. Factors that result in the fractures are complex. The objective of this morphometric study was to investigate the relationship between condylar fracture patterns and condylar morphological characteristics. Methods： We conducted a retrospective analysis of 107 patients admitted to the West China Hospital of Stomatology for bilateral condylar fractures caused by parasymphyseal impact. The patients were divided into five groups according to the type of condylar fracture. Ten parameters were evaluated on three-dimensional （3D） reconstruction mandible models through the Mimics 16.0 （Materialize Leuven, Belgium） anthropometry toolkit. Each parameter of the 3D models was analyzed using multivariate analysis. Multinomial logistic regression analyses were used to examine the relationships between the five groups. Results： The results showed that the differences of condylar head width （M 1 ）, condylar neck width （M3）, the ratio of condylar head width to condylar anteroposterior diameter （M1/M2）, the ratio of condylar head width to condylar neck width （M1/M3）, the ratio of condylar height to ramus height （M8/M7）, and mandibular angle （M10） were statistically significant （p 〈 0.05）. Type A condylar head fractures were positively associated with M1 （compared to Type B： OR ：1.627, 95% CI： 1.123, 2.359; compared to Type C： OR = 1.705, 95% CI： 1.170, 2.484） and M1/M2 （compared to Type B： OR = 1.034, 95% CI： 0.879, 2.484）. Type B condylar head fractures were negatively associated with M l 0 （compared to Type C： OR = 0.909, 95% CI： 0.821, 1.007）. condylar neck fractures were negatively associated with M3 （compared to condylar head： OR = 0.382, CI： 0.203, 0.720 ; compared to condylar base： OR = 0.436, 95% CI： 0.218, 0.874）, and positively associated with M 1/M3 （compared to condylar head： OR = 1.229, 95% CI： 1.063, 1.420 compared to condylar base： OR = 1.223, 95% CI： 1.034, 1.447）. condylar base fractures were positivel

关键词： Anatomical Feature condylar fracture Parasymphyseal Impact Three-dimensional Reconstruction

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Experimental Study on Anatomic Reduction of Lateral Pterygoid Muscle(Simulated Manipulation fracture Reduction)and condylar Free Reduction for condylar fracture

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Medicinal Plant 2023年第5期14卷 78-81页

作者： Junyi YOU Xiaofeng SHEN Qihan MA Guoqiang LIANG Suzhou TCM Hospital Affiliated to Nanjing University of Chinese Medicine Suzhou 215009China

[Objectives]To compare the fracture healing of keeping lateral pterygoid muscle anatomic reduction(simulated manipulation fracture reduction)with condylar free reduction in the treatment of condylar fractures.[Methods]Twenty-four New Zealand rabbits were randomly divided into two groups to mandibular condylar neck fracture model was *** team keep the lateral pterygoid muscle,the other excise *** vascular perfusion was done with ink before animals executed after operation 2,4,6 and 8 *** anteroposterior and mediolateral condylar diameters *** of operation side condylar proliferating layer,microvessel number and bone parameters were observed and analyzed after slices and HE staining.[Results]The mediolateral condylar diameters of operation side were significantly smaller than health side in condylar free reduction group at the 4,6,8 weeks(Pcondylar diameters at each time point(P>0.05).There were no significant differences in the anteroposterior and mediolateral condylar diameters of the anatomic reduction lateral pterygoid muscle group compared between the operation side and health side(P>0.05).The number of microvessel in condylar free reduction group were smaller than those in anatomic reduction lateral pterygoid muscle group(Pcondylar free reduction group and the anatomic reduction lateral pterygoid muscle group(all Pfractured it should keep lateral pterygoid muscle(manipulation fracture reduction)as possible,which is important in the fracture healing and functional recovering of mandibular.

关键词： condylar fracture Anatomic reduction lateral pterygoid muscle condylar free reduction Blood supply reconstruction fracture healing

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