Title: Effect of two different bone cements in thermal necrosis when associated to titanium versus carbon nailing for bone metastases - a numerical study

Authors: V.C.C. Oliveira; Elza M.M. Fonseca; C.C. Rua; J. Belinha; P.A.G. Piloto; R.M. Natal Jorge

Addresses: Centro Hospitalar do Porto, Institute of Biomedical Sciences Abel Salazar, University of Porto (CHP-ICBAS), Rua de Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal ' LAETA, INEGI, Mechanical Engineering Department, School of Engineering, Polytechnic of Porto (ISEP), Rua Dr. António Bernardino de Almeida 431, 4249-015 Porto, Portugal ' LAETA, INEGI, Department of Applied Mechanics, Polytechnic of Institute of Bragança (IPB), Campus de Sta Apolónia, 5300-253 Bragança, Portugal ' LAETA, INEGI, Mechanical Engineering Department, School of Engineering, Polytechnic of Porto (ISEP), Rua Dr. António Bernardino de Almeida 431, 4249-015 Porto, Portugal ' LAETA, INEGI, Department of Applied Mechanics, Polytechnic of Institute of Bragança (IPB), Campus de Sta Apolónia, 5300-253 Bragança, Portugal ' LAETA, INEGI, Mechanical Engineering Department, Faculty of Engineering of the University of Porto (FEUP), Rua Dr. Roberto Frias, 4200-465 Porto, Portugal

Abstract: The main objective of the paper is to study the thermal effect induced by different bone cements associated with intramedullary nails, titanium and carbon, in bone metastases treatment. The thermal necrosis effect of each cement polymerisation was verified to understand the role of such procedures. Numerical models with nailing systems, introduced in a cortical and spongy bone metastasis, were developed aiming to predict the temperature produced by different types and amount of cement polymerisation. The results showed that the polymerisation heat release in all models with a cement mantle filling in around the intramedullary nail and the necrosis largest area was predicted with CMW3®. It was verified that CF/PEEK nail and high viscosity Palacos R® reduce the heat transfer and the necrosis affected area. This effect could be an advantage for treatment, which aims to keep long-term stability and local metastatic disease control for functional improvement and pain relief.

Keywords: bone cement; bone metastases; thermal necrosis; titanium nail; carbon nail; numerical model; thermal analysis; computational model; intramedullary nail; metastatic lesion.

DOI: 10.1504/IJMEI.2021.117729

International Journal of Medical Engineering and Informatics, 2021 Vol.13 No.5, pp.386 - 396

Received: 03 May 2019
Accepted: 20 Nov 2019
Published online: 23 Sep 2021 *

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