Design of a Biofidelic Talus Implant Using Topology Optimization

الموضوعات

علوم تطبيقية وتكنولوجية

الملخص

The talus bone, a pivotal component in the ankle joint, plays a significant role in load transmission and motion facilitation. As with other bones, and due to its fragile vascular nature, it is especially susceptible to fracture which typically requires surgical intervention. For more extreme fractures, among the most common treatments are total talar replacements. Currently, they are custom made for each individual patient, resulting in increased financial costs and time until surgical implantation. To circumvent these drawbacks, generic talar prostheses were proposed. The primary issue is the lack of studies in literature on the optimization of generic talar prostheses. Therefore, this thesis research aims to design a biofidelic generic talus implant using topology optimization that is intended to tackle the drawbacks of custom talus implants, rendering its use more cost-effective and feasible in clinical situations, resulting in reduced complications for the patient pre- and post-operatively. This is done through establishing the loading and boundary conditions for three postures: dorsiflexion, neutral standing, and plantarflexion. Following that, the optimization for the generic implant is setup and carried out. The optimized geometry is then extracted and setup for the finite element evaluation of its stresses, to ensure its safety, and its contact characteristics, to explore its behavior on adjacent bone cartilages. The resulting optimized implant's mass is reduced by approximately 66.6%. Its stresses do not exceed 70 MPa, and has a safety factor of 15.7. Based on the aforementioned, the implant's safety against static loading in the defined three postures is ensured. Moreover, based on the contact characteristics, no improvement was shown as compared to its non-optimized, solid counterpart. Nevertheless, as intended, material, cost, and time reductions are expected, especially considering that the implant should be mass-produced.

روابط وملفات

التعريف والنوع

رقم الوثيقة

0f80931a-4f29-4dba-86c2-0bd85dabaa42

رقم العقد

0

نوع الوسائط

Crawler

نوع المحتوى

الرسائل العلمية

صيغة المصدر

رسائل ماجيستير

نوع الملف

pdf text

أسماء الملفات

2282756_1.pdf

بيانات النشر

ألقاب المؤلفين

[{"name_ar":" Marwan El Rich","title_ar":"اشراف","title_en":"Supervision"},{"name_ar":"Ahmed Hassan Hafez","title_ar":"اعداد","title_en":"Preparation"},{"name_ar":"Andreas Schiffer","title_ar":"اشراف","title_en":"Supervision"}]

اللغة

English

المصدر والدورية

اسم المصدر

Design of a Biofidelic Talus Implant Using Topology Optimization

المحتوى والصفحات

عدد الصفحات

0

كلمات الباحثين

Generic Talus Implant Total Talus Replacement TopologyOptimization Finite Element Analysis

إشراف وإعداد

الإشراف

Marwan El Rich, Andreas Schiffer

الإعداد

Ahmed Hassan Hafez

الاقتباسات الببليوغرافية