Chinese Journal of Tissue Engineering Research ›› 2012, Vol. 16 ›› Issue (16): 2935-2938.doi: 10.3969/j.issn.1673-8225.2012.16.020

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Comparison of biomechanics property and exotherm between polymethylmethacrylate bone cement and Cortoss bone cement  

Qian Ming, Pan Jun, Meng Bin, Zhang Wen, Zhu Fa-hao, Cao Cheng, Luo Zong-ping, Yang Hui-lin   

  1. Department of Orthopedics, First Affiliated Hospital of Soochow University, Suzhou  215006, Jiangsu Province, China
  • Received:2011-10-05 Revised:2012-01-12 Online:2012-04-15 Published:2012-04-15
  • Contact: author: Yang Hui-lin, Doctor, Chief physician, Department of Orthopedics, First Affiliated Hospital of Soochow University, Suzhou 215006, Jiangsu Province, China suzhouspine@ 163.com
  • About author:Qian Ming★, Studying for master’s degree, Department of Orthopedics, First Affiliated Hospital of Soochow University, Suzhou 215006, Jiangsu Province, China qianming85@ 163.com

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Abstract:

BACKGROUND: Polymethylmethacrylate (PMMA) is a kind of bone cement commonly used for percutaneous kyphoplasty (PKP). However, it has inherent drawbacks, including a high curing exotherm and the incorporation of toxic components in their formulations. Now, there are some new biological bone cements, for example, Cortoss.
OBJECTIVE: To compare the in vitro biomechanical properties of PMMA bone cement and Cortoss bone cement.
METHODS: Both PMMA bone cement and Cortoss bone cement were used to make the anti-compression and anti-bending models according to ISO 5833:2002. Then, the compressive load strength and bending load strength were tested using mechanical testing machine. During the modeling process, the polymerization temperature was tested in their formulations.
RESULTS AND CONCLUSION: The peak exotherm and bending modulus of Cortoss were significantly lower than those of PMMA, and the compressive strength was stronger than that of PMMA (P < 0.05). However, there was no significant difference in bending strength (P < 0.05 ). The biomechanical strength of Cortoss bone cement was better than that of PMMA bone cement. Due to its lower exotherm, Cortoss bone cement was safer during the operation.

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