سامانه همایش‌ها TSTA | ثبت‌نام و ارسال مقاله کنفرانس‌ها و کنگره‌های ملی

صفحه اصلی / سی و دومین کنفرانس ملی و دهمین کنفرانس بین المللی مهندسی زیست پزشکی ایران

Finite Element Analysis of Lumbar Spine Biomechanics Following Cement Augmentation with Different PMMA Volumes: A Comparison with Intact Spine

نویسندگان :

Reihane Yazdani¹ Mohammdjavad (Matin) EinaAfshar² Azadeh Ghoochani³ Nima Jamshidi⁴

1- University of Isfahan 2- Aalborg University, Denmark 3- University of Isfahan 4- University of Isfahan

کلمات کلیدی :

Bone cement augmentation،Vertebral compression fracture

چکیده :

This study presents a finite element analysis (FEA) of lumbar spine biomechanics following cement augmentation with varying volumes of polymethylmethacrylate (PMMA), aiming to identify the optimal volume for vertebral stability while minimizing stress on adjacent segments. A three-dimensional model of the L2–L3 motion segment was constructed from CT scans of a 50-year-old female patient using MIMICS and 3-Matic software. The cortical shell thickness was set to 1 mm, endplates to 0.8 mm, and the intervertebral disc was modeled based on patient anatomy and literature. Cement was idealized as a cylinder coaxial with a pedicle screw and embedded within the trabecular bone. Three cement volumes—1.0 mL, 1.5 mL, and 2.5 mL—were analyzed alongside an intact control model. Boundary conditions included full constraint of L3 and application of compressive and bending loads to L2. Simulations were performed using Abaqus CAE 2022 under dynamic explicit conditions. Results showed that 1.5 mL cement reduced compressive stress by 29.9%, while 2.5 mL yielded the greatest reductions in flexion (56.2%), lateral bending (2.5%), and axial rotation (3.3%). The intact vertebra exhibited maximum von Mises stress of 86.35 MPa under compression, compared to 60.5 MPa and 70.54 MPa for 1.5 mL and 2.5 mL cement, respectively. These findings suggest that moderate cement volumes offer superior biomechanical performance across multiple loading scenarios. Despite modeling simplifications, the study supports the use of simulation-based planning to optimize cement volume and enhance procedural safety in vertebral augmentation.

لیست مقالات

لیست مقالات بایگانی شده

تأثیر محافظه‌کاری حسابداری بر ارزش شرکت با تأکید بر نقش متنوع سازی شرکتی

ابراهیم نویدی عباسپور - فاطمه منافی

Digital Technology and Supply Chain Transformation: A Qualitative and Analytical Approach

Elnaz Shakerifar

افزایش شفافیت تصمیم‌گیری خودکار در سیستم‌های بانکی با استفاده از هوش مصنوعی قابل تبیین (XAI)

صمد میرزا محمدی

Modeling Attention Performance Across Female Reproductive Aging Using Logistic Regression

Zahra Zehtabi - Leila Mehdizadeh Fanid - Pedram Salehpoor - Mahdi Jafari Asl

کاهش توهم در مدل‌های زبانی بزرگ جهت تولید اطلاعات درست

زهرا روزبهانی

Effect of Aimlabs Software on Sustained Attention, Reaction Time, and Hand-Eye Coordination in Stroke Patients: A Preliminary Study

SEYEDALI BAGHERZADEH - Leyla Rastgar-Farajzadeh

DMAEMA-based photocrosslinkable hydrogels with injectable capabilities for smart drug delivery systems in implant infections

Fatemeh Haj Sadeghi - Vahid Haddadi Asl - Hanie Ahmadi

Biomedical Applications of Pectin Nanomaterials: Progress and Perspectives

Maryam Rajabzadeh-khosroshahi - Ali Baradar Khoshfetrat - Mehdi Salami-Kalajahi

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

Simulation of Mechanical Property Changes in Biodegradable Scaffolds under Various Loading Conditions

ELNAZ ABEDINI - Mehdi Mehri

بیشتر