A New Ortho-POD Biotribometer for Orthopaedic Biomaterials Wear Testing

Abstract:

Wear has been the primary failure mode affecting the long-term performance of orthopaedic implants. The tribological evaluation of orthopaedic biomaterials in vitro is regarded as an essential material characterization before implantation. In this paper, a new biotribometer of pin-on-disk type, the Ortho-POD, was designed and built for the biotribological tests of orthopaedic biomaterials. The primary goal of developing this Ortho-POD is to simulate and predict the wear properties of orthopaedic biomaterials in clinical application, especially in the form of hip, knee and spine prostheses. This 6-station Ortho-POD, including a pin guiding module, a motion module, a framework module and a loading module, provides multidirectional slide track shapes and variable load via a computer-controlled programmer. A frequency controller and heating system were assembled in the Ortho-POD so as to offer a wide range of testing conditions. Keywords-biotribology; wear; orthopaedic biomaterial; pin on disk; wear testing

• Periodical: Applied Mechanics and Materials (Volume 461)
• Pages: 367-372
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.461.367
• Online since: November 2013
• Authors: Zi Kai Hua, Yong Wei Fan
• Keywords: Biotribology, Orthopaedic Biomaterial, Pin on Disk, Wear, Wear Testing

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