Klavikula Kırıklarında Plak Uygulamasının Yerleşim Konumuna Göre Yorulma Davranışının Sonlu Elemanlar Yöntemi ile İncelenmesi

Öz

Amaç; Klavikula, omuz ve kolun hareketlerinde önemli bir göreve sahip olan anatomik bir yapıdır. Klavikula kırıkları iskelet sistemi yaralanmaları içerisinde sık karşılaşılan bir problemlerdendir. Klavikula kırıklarında, kırığın türüne göre çeşitli implantlar kullanarak omuzun ağrısız ve fonksiyonlarını en uygun düzeye getirmek asıl amaçtır. Bu çalışmada klavikula kırıklarında kullanılan anatomik plak uygulamasının biyomekanik açıdan incelenmesi amaçlanmıştır.

Yöntem; Bu çalışmada, DICOM formatında bilgisayarlı tomografi görüntüleri kullanılarak normal anatomiye sahip klavikula modellenmiş ve klavikula üzerinde kırık hattı oluşturularak superior ve anteriora plak yerleştirilmiştir. Plaklarda meydana gelen gerilmeler, oluşturulan modeller üzerine eksenel kompresyon ve konsol bükme yüklemeleri uygulanarak non-lineer sonlu elemanlar yöntemi ile incelenmiştir. Analizler, ANSYS (surum 18) sonlu elemanlar programında yapılmış ve tüm modellerde aynı sınır şartları uygulanmıştır.

Bulgular; Analizlerde plaklar üzerinde meydana gelen maksimum eşdeğer gerilmelere (MES) bakılmış ve özellikle anteriora yerleştirilen plakta gerilmenin azaldığı tespit edilmiştir. Klavikula üzerine yerleştirilen plakların konumlarına göre yorulma davranışları karşılaştırılmıştır.

Sonuçlar; Bu çalışmada, klavikulanın anteriorüne yerleştirilen plaklarda gerilmenin daha az olduğu sonlu elemanlar yöntemi ile gösterilmiştir. Ayrıca, anterior bölgeye yerleştirilen plakların en uzun ömre sahip olmasından dolayı kırılma kararlığı açısından daha güvenli olduğu belirlenmiştir.

Anahtar Kelimeler

• Omuz,klavikula,plak,Sonlu Elemanlar Analizi

Investigation of Fatigue Behaviour Of Plate Applications In Clavicle Fractures By Finite Element Method According to The Plate Replacement Position

Öz

Background: The clavicle is an anatomical structure whıch has an important role on the movements of the shoulder and arm. Clavicular fractures are a common problem in skeletal system injuries. The main purpose is to achieve a painless shoulder joint and to optimise its function ıin clavicle fractures.n this study, it was aimed to investigate biomechanically the application of anatomic plaque used in clavicle fractures.Methods: In this study, a normal anatomical clavicle was modeled using computed tomography images in DICOM format, a fracture line was created on the clavicle and the plate was placed superiorly and anteriorly.The stresses on the plates under axial compression and console bending were investigated on the formed models by using finite element method. Analyzes were made non-linear using ANSYS (v.18) and same limit conditions were applied in all models. Findings: The maximum equivalent stresses (MES) on the plaques were observed in the analyzes and it was found that the tension on the plaque, especially placed anteriorly, decreased.Fatigue behaviours were compared according to the positions  of the plates placed on the clavicle. Results: In this study, the finite element method was used which showed less tension on the plates placed on the anterior of the clavicle.It was also found that the plates placed in the anterior region were safer in terms of fatigue fracture stability due to longest longevity of the plates.

Anahtar Kelimeler

• Shoulder,clavicle,plate,finite element analysis

Kaynakça

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