Please wait ...
0% Complete
فارسی
Home
/
سی و دومین کنفرانس ملی و دهمین کنفرانس بین المللی مهندسی زیست پزشکی ایران
Screws That Hold: Stability Analysis of Distal Tibial Fractures Using FEA and a Novel Fixation Index
Authors :
Amirhossein Karami
1
Mohadese Rajaeirad
2
Mohamed Elfekky
3
Nima Jamshidi
4
1- گروه مهندسی پزشکی، دانشکده مهندسی، دانشگاه اصفهان
2- گروه مهندسی پزشکی، دانشکده مهندسی، دانشگاه اصفهان
3- Tarabichi joint care
4- دانشگاه اصفهان
Keywords :
distal tibia fracture،Finite element analysis،biomechanics،screw fixation،fixation stability index
Abstract :
The biomechanical stability of fracture fixation plays a critical role in postoperative recovery and long-term functional outcomes. This finite element (FE) study compared three screw-based fixation methods for distal tibial fractures, following the AO Surgery Reference guidelines. Patient-specific tibial anatomy was reconstructed from routine clinical CT scans using Mimics software, and fracture models were created to represent a standard extra-articular distal tibial fracture. Each fixation configuration was assessed under physiologically relevant loading conditions. Von Mises stress distributions were calculated for both the intact tibial segment and the fracture fragment, as well as for the fixation screws. In addition, strain and displacement values were determined for each configuration. To provide a single comparative measure, a novel Fixation Stability Index (FSI) was introduced, defined as the product of mean bone stress and strain divided by the maximum fragment displacement. Results showed that medial malleolar split intra-articular fracture yielded the highest FSI (3.77), indicating superior stability, while transverse simple extraarticular fracture had the lowest (1.0). Peak screw stresses were lowest in lateral tibial split intra-articular fracture (61.8 MPa), suggesting reduced implant fatigue risk. Maximum fragment displacement ranged from 0.39 mm to 10.7 mm, and strain distributions were consistent with observed stress patterns. These findings suggest that the FSI provides an effective and quantitative approach for comparing fixation strategies in FEbased orthopedic biomechanics. Incorporating such parameters into preoperative planning may improve fixation choice and enhance patient-specific outcomes.
Papers List
List of archived papers
چالشها و فرصتهای هوش مصنوعی
بهزاد بالازاده - حسین بوداقی - مرتضی محمود زاده
چالشهای بودجهریزی بر مبنای عملکرد با رویکرد گزارشگری یکپارچه در بخش عمومی ایران
جواد پورغفار - مریم عرفان اسفنجانی - امیرعطا علیزاده
Evaluation of Mechanical and Biological Properties of PCL-coated Magnesium Scaffolds
Fatemeh Sharifabadi - Sayed Khatiboleslam Sadrnezhaad
FSI Modeling of Osteocyte Mechanotransduction Under Dynamic Loading
Zahra Rahmanisamani - Hanieh Niroomand-Oscuii - Mohammad Niroobakhsh - Ehsan Alizad Farokhi
ساخت و انتقال ریزقطرات مغناطیسی در تراشه مایکروفلوئیدیک
نازنین پژوهیده - روزبه عابدینی نسب - مینا صوفی زمرد
بررسی نقش روحیه مودیان مالیاتی بر اساس تیپهای شخصیتی در قصد فرار مالیاتی
سحر بخشی - مهدی ذوالفقاری - کیهان آزادی هیر
تاثیر هوش مصنوعی بر توسعه اقتصاد حسابداری
نیما قاسم زاده شهرک - سعید انورخطیبی - سلمان عبدی
Recovery of Hand Motor Function in Children with Hemiparetic Cerebral Palsy using an Interactive Computer Game Combined with Mechanoreceptor Stimulation: A Pilot Study
Mobina Ramezani - Shahed Salehzehi - Parisa Hosseini - Zahra Alizadeh Sarborj - Ghazal Mohammadzadeh - Hamid Reza Kobravi - Narges Hashemi - Mehran Beiraghi Toosi - Javad Akhondian
چالشهای اخلاقی هوش مصنوعی در حسابداری مدیریت
محمدرضا پورعلی لاکلایه - مصطفی لطفی
Accelerated Diffusion-Weighted Imaging via Diffusion Gradient Alternation in Radial k-Space Sampling
Fateme Hoseini Rashkani - Abbas Nasiraei Moghaddam
more
Samin Hamayesh - Version 44.7.0