Journals / Eklem Hastalıkları ve Cerrahisi Dergisi (Eski Adı: Artroplasti Artroskopik Cerrahi Derg.) / 2013 / Cilt: 24 - Sayı: 3

Determination of the effect on the proximal femoral load distribution of diaphyseal cement support in femoral intertrochanteric fractures with calcar defect by finite element analysis

Kalkar defekti olan femur intertrokanterik kırıklarında diafizer çimento desteğinin femur üst uç yük dağılımına etkisinin sonlu element analizi ile tayini

Pages
163–168
Publication Date
2022-10-18
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Conclusion: Our study results showed that forming a type of calcar to be used in a hemiarthroplasty surgery and shaping of this region with bone cement does not produce further stress on the cement/bone intersection in intertrochanteric fractures with defected calcar region.

📌 3 Key Takeaways

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Objective & Hypothesis:Objectives: This study aims to investigate biomechanically positive and negative aspects of arthroplasties in combination with diaphyseal cement support as an alternative to calcar supported prosthesis on the proximal femoral load distribution, using finite element analysis method in a virtual environment in intertrochanteric fractures with calcar femoral defect.
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Key Findings & Data:The first one was the whole femur, while the other one was the region starting from trochanter minor and extending distally to the 5 cm area.
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Conclusion & Impact:Conclusion: Our study results showed that forming a type of calcar to be used in a hemiarthroplasty surgery and shaping of this region with bone cement does not produce further stress on the cement/bone intersection in intertrochanteric fractures with defected calcar region.
🔬Design:Modeling & Simulation
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Objectives: This study aims to investigate biomechanically positive and negative aspects of arthroplasties in combination with diaphyseal cement support as an alternative to calcar supported prosthesis on the proximal femoral load distribution, using finite element analysis method in a virtual environment in intertrochanteric fractures with calcar femoral defect. Materials and methods: Three femur models were created using the ANSYS method. These were named as a intertrochanteric fracture model without calcar defect, an intertrochanteric fracture model with thick cement mantle and calcar defect, and an intertrochanteric fracture model with thin cement mantle and calcar defect. In the finite element analysis setting, two regions were analyzed for load distributions. The first one was the whole femur, while the other one was the region starting from trochanter minor and extending distally to the 5 cm area. Results: In the trochanteric fracture model without calcar defect, the stress value in the whole femur was found to be 22.9 MPa; whereas it was 29.2 MPa in the 5 cm long section starting at the trochanter minor. The stress values were 23.6-29.9 MPa in the intertrochanteric fracture model with thick cement mantle and 24.2-32.1 MPa in the intertrochanteric fracture model with thin cement mantle and calcar defect. The statistical analysis was performed using t-test and a p value of >0.005 was found in all. Conclusion: Our study results showed that forming a type of calcar to be used in a hemiarthroplasty surgery and shaping of this region with bone cement does not produce further stress on the cement/bone intersection in intertrochanteric fractures with defected calcar region.

Özet

Amaç: Bu çalışmada, kalkar femoris defektli intertrokanterikkırıklarda kalkar destekli protezlere alternatif olarak diafizer çimento desteği ile kombine yapılan artroplastilerde femur üst ucundaki yük dağılımının sonlu eleman analizi yöntemiylesanal ortamda, biyomekanik olarak olumlu ve olumsuz yönleri araştırıldı. Gereç ve yöntemler: ANSYS yöntemi ile üç adet femur modeli oluşturuldu. Bunlar kalkar defektsizintertrokanterik kırık modeli, kalkar defektli kalın çimento mantolu intertrokanterik kırık modeli ve kalkar defekt- li ince çimento mantolu intertrokanterik kırık modeliolarak adlandırıldı. Sonlu element analizi ortamında yük dağılımları için iki bölge incelendi. Birincisi tüm femur,diğeri ise trokanter minörden başlayıp distal 5 cm’lik kısma uzanan bölge idi.Bulgular: Kalkar defektsiz trokanterik kırık modelinde tüm femurda stres değerleri 22.9 MPa, trokanter minörden başlayıp 5 cm’lik bölgede 29.2 MPa olarak bulundu. Stres değerleri, kalkar defektli kalın çimento mantolu intertrokanterik kırık modelinde 23.6-29.9 MPa, kalkardefektli ince çimento mantolu intertrokanterik kırık modelinde ise 24.2-32.1 MPa idi. İstatistiksel analizt-test ile yapıldı ve tümünde p değeri >0.005 olarakbulundu.Sonuç: Çalışma bulgularımız, kalkar bölgesi defektli intert-rokanterik kırıklarda, bu bölgenin kemik çimentosu ile şekilverilip bir çeşit kalkar oluşturulması ile yapılacak olan hemi- artroplasti ameliyatında çimento/kemik bileşkesinde dahafazla stres oluşturmadığını gösterdi.

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Cite This Article

ÇİFT, H., EKŞİOĞLU, F., DENİZ, S. (2022). Determination of the effect on the proximal femoral load distribution of diaphyseal cement support in femoral intertrochanteric fractures with calcar defect by finite element analysis. Eklem Hastalıkları ve Cerrahisi Dergisi (Eski Adı: Artroplasti Artroskopik Cerrahi Derg.), Cilt: 24 - Sayı: 3, 163–168. https://ajindex.com/articles/498618

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