Lightweight Splint Design for Individualized Treatment of Distal Radius Fracture
A systematic design approach is proposed for medical splints for individualized treatment of the distal radius fracture. An initial split structural model is first constructed by 3D scanning of an injured limb. Based on the biomechanical theory and clinical experiences, the topology optimization method is applied to design the splint structure. The optimized lightweight splint is realized by additive manufacturing using polylactic acid. Compared to the traditional designs for the distal radius fracture, the optimized design by the proposed approach exhibits a weight reduction of more than 40%. Besides, the mechanical properties of the splint meet the requirements of medical treatment according to the simulation results. Numerical examples are provided to demonstrate the applicability of the approach.
KeywordsLightweight splint Distal radius fracture Topology optimization Individualized treatment
This work is supported by the Key Project of the Medical-Engineering Cross Research Foundation of Shanghai Jiao Tong University (Grant No.YG2015ZD02), the Key Scientific Research Project of Shanghai Municipal Commission of Health and Family Planning (Grant No.201640021), National Natural Science Foundation of China (Grant Nos. 51705311) and the State Key Laboratory of Mechanical System and Vibration of Shanghai Jiao Tong University (Grant No. MSVZD201709).
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