Dinamik Kompresyon Plak (DCP) ve Sınırlı Temaslı Dinamik Kompresyon (LC-DCP) Plak'ın Aksiyel Yüklenme Karşısında Radius Direnci Üzerindeki Biyomekanik Etkileri

Öz

Amaç: Dinamik kompresyon plağı (DCP) ve sınırlı temaslı dinamik kompresyon plağı (LC-DCP), radius şaft kırıklarının açık redüksiyonlu iç fiksasyonu için kullanılır. Diğer sistemlerden, azaltılmış plak-kemik teması ve dinamik kompresyon prensipleriyle ayrılırlar. Bu çalışma, DCP ve LC-DCP'deki aksiyel kuvvetler altındaki stres ve deformasyonu karşılaştırmayı amaçlamaktadır. Yöntem: DCP ve LC-DCP, deneyimli bir cerrah tarafından 16 yapay radius kemiğine uygulandı ve her biri için üç kortikal vida ile kırık hattının distal ve proksimaline sabitlendi. Aksiyel yükleme testlerinde, DCP ve LC-DCP ile test sawbone materyallere uygulanan kuvvet miktarı ve ekstansiyon miktarı hesaplandı. Bulgular: Ön kol kırık modellerinde DCP ve LCDCP fiksasyon plaklarının uygulanan kuvvet ve yer değiştirme açısından istatistiksel olarak benzer olduğu bulundu (p=0,161). Sonuç: Çalışma, her iki implant tipinin (DCP ve LC-DCP) aksiyel yüklemeler altında mekanik olarak anlamlı bir fark olmaması nedeniyle ön kol kırıkları ve osteotomilerinin fiksasyonu için uygun olabileceğini göstermiştir. Uygulanacak plak, plak maliyeti ve anatomik gereksinimler göz önünde bulundurularak seçilebilir.

Anahtar Kelimeler

• Dinamik Kompresyon Plağı
• Fiksasyon
• Radius Kemiği
• Aksiyal Yüklenme

Effects of Dynamic Compression Plate (DCP) and Limited Contact Dynamic Compression Plate (LC-DCP) on Resistance of Radius against Axial Compression: Biomechanical Investigation

Öz

Objective: Dynamic compression plate (DCP) and limited contact dynamic compression plate (LC- DCP) are used for open reduction internal fixation of radial shaft fractures. They are distinguished from other systems by the principles of reduced plate-bone contact and dynamic compression. This study aims to compare the stress and deformation under axial forces in DCP and LC-DCP. Materials and Methods: The DCP and LC-DCP were applied to 16 artificial radius bones by an experienced surgeon fixed at the distal and proximal of the fracture line with three cortical screws for each. In axial loading tests, the amount of force applied to the sawbones with DCP and LC-DCP and the amount of extension were calculated. Results: DCP and LCDCP fixation plates on forearm fracture models were found to be statistically similar in terms of the applied force and displacement (p=0.161). Conclusion: The study showed both implant types (DCP and LC-DCP) could be appropriate for the fixation of forearm fractures and osteotomies due to no mechanically significant difference under axial loadings. The plate to be applied can definitely be chosen considering the cost of the plate and the anatomical requirements.

Anahtar Kelimeler

• Dynamic Compression Plate
• Fixation
• Radius Bone
• Axial Loading

Kaynakça

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