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Open Access A novel anatomical patellar plate for transverse patellar fracture – A biomechanical in-vitro study

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Objective: The aim of this study was to assess the safety and stability of our novel anatomical patella plate and to compare its stability with tension band-wire technique. Methods: A total of 12 cadaveric preserved knees (six right and six left patellae) with close patellar size were chosen to form two groups of six samples. Each group received either plate or tension band-wiring fixation for an experimentally created patella fracture. Cyclic load of an average of 350 N was applied for all specimens and after accomplishing 50 cycles the displacements of all fracture edges were recorded. Results: After completing 50 cycles in each group, the average fracture edges displacement measured in the plate group was 1.98 ± 0.299 mm, whereas the average fracture edges displacement measured in the tension band-wire group was 2.85 ± 0.768 mm (p = 0.016). Conclusion: In the operative treatment of displaced transverse patellar fractures, the strength of fixation obtained by titanium curved plates is highly stronger when compared to the fixation with a tension band-wire technique. Fixation with titanium curved plates provides satisfactory stability at the fracture site which allow withstanding the cyclic loads during the postoperative rehabilitation.
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Document Type: Research Article

Affiliations: 1: Dokuz Eylul University, Faculty of Medicine, Department of Orthopaedics and Traumatology, Izmir, Turkey 2: Catalca Ilyas Cokay Hospital, Department of Orthopaedics and Traumatology, Istanbul, Turkey 3: Dokuz Eylul University, Health Science Institute, Department of Biomechanics, Izmir, Turkey

Publication date: January 1, 2017

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