Development and mechanical properties of a locking T-plate

作者：Mesquita Luciane R; Rahal Sheila C^*; Mesquita Neto Camilo; Kano Washington T; Beato Antonio C; Faria Luis G; Castilho Maira S

来源：Pesquisa Veterinaria Brasileira, 2017, 37(5): 495-501.

DOI：10.1590/S0100-736X2017000500012

• Bone-plate
• implant
• fracture
• mechanical study

This study aimed to develop a locking T-plate and to evaluate its mechanical properties in synthetic models. A titanium 2.7mm T-plate was designed with a shaft containing three locked screw holes and one dynamic compression hole, and a head with two locked screw holes. Forty T-shaped polyurethane blocks, and 20 T-plates were used for mechanical testing. Six bone-plate constructs were tested to failure, three in axial compression and three in cantilever bending. Fourteen bone-plate constructs were tested for failure in fatigue, seven in axial compression and seven in cantilever bending. In static testing higher values of axial compression test than cantilever bending test were observed for all variables. In axial compression fatigue testing all bone-plate constructs withstood 1,000,000 cycles. Four bone- plate constructs failure occurred before 1,000,000 cycles in cantilever bending fatigue testing. In conclusion, the locking T-plate tested has mechanical properties that offer greatest resistance to fracture under axial loading than bending forces.

• 出版日期2017-5
• 单位Univ Estadual Paulista