A general multi-objective topology optimization methodology developed for customized design of pelvic prostheses

Iqbal, Taimoor; Wang, Ling; Li, Dichen; Dong, Enchun; Fan, Hongbin; Fu, Jun; Cai, Hu

doi:10.1016/j.medengphy.2019.06.008

Cited by 62 publications

(42 citation statements)

References 39 publications

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“…A technique that should be considered is topology optimisation (TO). TO is a mathematical method applied in the FEA phase and is capable of removing material that dependant to the input variables, is unnecessary (Iqbal et al., 2019; Sutradhar et al., 2016). Instead of testing a man‐made design with FEA, we can have the TO calculate the ideal design by removing material from a volume, given certain boundary conditions.…”

Section: Discussionmentioning

confidence: 99%

Patient‐specific finite element models of the human mandible: Lack of consensus on current set‐ups

et al. 2020

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Over the last decennia, a large variety of osteosynthesis plates and prostheses has been presented in the literature for the treatment of, for example, trauma, oncology or TMJ patients. These applications have in common that failure (loosening or fracturing) of the implanted material, or the screw-fixation of the implant to the patient's bone will often result in failure of the application. It appears crucial for success that the implanted osteosynthesis plates and its fixations are of a matching strength for the patient's specific situation. Mandibular reconstruction failure through either osteosynthesis plate failure or screw loosening are widely reported in the literature as the most common

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Section: Discussionmentioning

confidence: 99%

Patient‐specific finite element models of the human mandible: Lack of consensus on current set‐ups

et al. 2020

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“…However, in practical engineering, the frame needs to satisfy multiple working conditions at the same time, which might involve multi-objective decision making. In order to achieve the desirable Pareto optimal solution, a multi-objective topological optimization function based on compromise programming approachcan be defined as [11,32,33]:…”

Section: B Multi-objective Topology Optimization Methodsmentioning

confidence: 99%

Multi-Objective Topological Optimization of an Electric Truck Frame Based on Orthogonal Design and Analytic Hierarchy Process

Qiao¹,

Xu²,

Wu³

et al. 2020

IEEE Access

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The electric truck frame as a vital load-bearing component has aroused growing attentions due to its enormous potential in lightweight. However, few systematic studies have been performed on the multi-objective topological design of the frame attributable to its complexity on loading and conflicting objectives. This paper aims to develop a multi-objective topology optimization strategy of the electric truck frame based on the hybrid decision making method combining orthogonal test design (OTD) and analytic hierarchy process (AHP). The hybrid strategy is performed to obtain a new set of weight ratio combination from objective data and subjective judgment. The topological results show that the overall performance of the optimal frame is better than any of the methods applied alone. By comparing, it is found that the strength and stiffness of the optimal frame is higher than that of the original frame from the perspective of static conditions, and the low-order natural frequency of the optimal frame is significantly improved. It demonstrates that the proposed approach could be as an effective tool for multi-objective topology optimization of the electric truck frame in seeking lightweight and comprehensive mechanical performance. The hybrid strategy might be expected to provide some guidance for more complicated engineering problems. INDEX TERMS Electric truck frame, multi-objective design, topology optimization, orthogonal test, analytic hierarchy process.

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“…Wide en bloc resection is a standard treatment for malignant periacetabular tumor. Once pelvic integrity is disrupted, it often results in fecal/urinary incontinence, prolapse and hernia [5][6][7]. Thus, bone defect reconstruction after tumor resection is critical for patients with malignant pelvic tumors.…”

Section: Introductionmentioning

confidence: 99%

3D-printed Prostheses Assisted by Osteotomy Guide Plates for Reconstruction Following Periacetabular Tumor Resection via Two Approaches

Zhao

Zhang

Deng

et al. 2021

Preprint

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Background: Prosthetic reconstruction after periacetabular tumor resection likely yield good function. However, complications with this technique are common. Therefore, alternative prosthetic design and surgical technique warrant study. Methods: Six patients were retrospectively reviewed with malignant periacetabular tumors who received reconstruction using 3D-printed prostheses assisted by osteotomy guide plates via two approaches between July 2017 and June 2020. The surgical data, including operative duration and intraoperative blood loss were recorded. Preoperative and postoperative pain at rest was examined using the visual analog scale (VAS). The postoperative functional outcomes were evaluated using the Musculoskeletal Tumor Society (MSTS) scoring system, and the postoperative complications were analyzed.Results: The mean follow-up was 19 months (range, 3-36 months). The mean intraoperative blood loss was 1416 ml (range, 600-2000 ml), and the mean operative duration was 333 min (range, 300-370 min). Satisfactory surgical margins were achieved in all patients. Six patients complained of severe pain preoperatively (VAS score, mean, 6; range, 4-8) and described significant alleviation of pain at 4 weeks postoperatively (VAS score, mean, 2; range, 0-5). At the 12 weeks after surgery, the mean MSTS score was 15.6 (range, 5-27). Local recurrence occurred in one patient at 3 months after surgery.Conclusions: The 3D-printed prosthesis represents a potential alternative for reconstruction after malignant periacetabular tumor resection. The design of the two approaches and the use of osteotomy guide plates can yield good functional results, as well as low rate of complications.Trial registration: This study has been granted an exemption from requiring ethics approval by the ethics committee of Tianjin Hospital.

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A general multi-objective topology optimization methodology developed for customized design of pelvic prostheses

Cited by 62 publications

References 39 publications

Patient‐specific finite element models of the human mandible: Lack of consensus on current set‐ups

Patient‐specific finite element models of the human mandible: Lack of consensus on current set‐ups

Multi-Objective Topological Optimization of an Electric Truck Frame Based on Orthogonal Design and Analytic Hierarchy Process

3D-printed Prostheses Assisted by Osteotomy Guide Plates for Reconstruction Following Periacetabular Tumor Resection via Two Approaches

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