Finite element analysis application in presurgical planning:Treatment choise of temporomandibular joint ankylosis

马立敏(Ma Limin，Dept Pls Surg Guangzhou Gen Hosp Guangzhou Mil Command，Guangzhou Guangdong 510010)…∥Chin J Clin Basic Orthop Res.－2010，2(2).－113～119

Finite element analysis application in presurgical planning:Treatment choise of temporomandibular joint ankylosis

马立敏(Ma Limin，Dept Pls Surg Guangzhou Gen Hosp Guangzhou Mil Command，Guangzhou Guangdong 510010)…∥Chin J Clin Basic Orthop Res.－2010，2(2).－113～119

ObjectiveThe aim of this study is to evaluate the applicable value of finite element analysis(FEA)for presurgical planning in the treatment of temporomandibular joint(TMJ)ankylosis.MethodsCT image data of one patient with unilateral TMJ ankylosis were imported to MimiCS 13.1 software and then reconstructed into 3D mandible model.Two surgical methods(plate fixation and non-plate fixation)were simulated.Normal and TMJ mandible finite element models under two different virtualsurgical methods were established subsequently through FEA Abaqus software.Conditions of condylar process stress distribution of normal mandible and TMJ ankylosis mandible under two surgical procedures were analyzed quantitatively.ResultsThe value of condylar process stress distribution of mandible under non-plate fixation virtual surgery was larger than normal value，but that of mandible under plate fixation virtual surgery was near to normal value.ConclusionFor TMJ ankylosis surgery，EFA technique can be used to construct finite element model and then to mimic virtual surgery therefore provide information for doctors to choose surgical methods.19 refs，4 figs，3 tabs.

(Authors)