| Summary: | 碩士 === 國立成功大學 === 醫學工程研究所碩博士班 === 90 === Abstract
The DDH is common disease in the new born infant and the adolescence as well as the adult could also be involved with the DDH. However, the basic biomechanical information is unclear and this information is important for the evaluation an treatment of this disease.
In this study, a unilateral dislocated DDH patient was employed to investigate the biomechanical response of the DDH. Both motion analysis and finite element simulation were used to perform the investigation through the comparison of the affected and normal sides. The results of motion analysis were used to obtain the joint reaction force, which was then input as the loading condition of finite element simulation. The results indicated that cortical bone was the major load carrier in both normal and affected pelvis and loading transferred from femoral head to the sacro-iliac joint as well as pubic bone. However, for the DDH side the loading was concentrated at the brim of acetabulum while the normal side was concentrated with the acetabulum joint. For the tabecular bone, the loading on pelvis, both normal and DDH side, was located the iliac wing but the DDH side had a greater stress value than the normal side. The major reason for these various stress distribution was due to the different loading conditions between the DDH and normal sides. Further investigation of the load condition through motion analysis is required to accurately represent the condition in dislocated hip join.
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