Friction and wear of four common orthopaedic biomaterials, alumina (Al2O3), cobalt-chromium (CoCr), stainless steel (SS), and crosslinked ultra-high-molecular-weight polyethylene (UHMWPE), sliding against bovine articular cartilage explants were investigated by reciprocating sliding, nanoscale friction and roughness measurements, protein wear assays, and histology. Under the experimental conditions of the present study, CoCr yielded the largest increase in cartilage friction coefficient, largest amount of protein loss, and greatest change in nanoscale friction after sliding against cartilage. UHMWPE showed the lowest cartilage friction coefficient, least amount of protein loss, and insignificant changes in nanoscale friction after sliding. Although the results are specific to the testing protocol and surface roughness of the examined biomaterials, they indicate that CoCr tends to accelerate wear of cartilage, whereas the UHMWPE shows the best performance against cartilage. This study also shows that the surface characteristics of all biomaterials must be further improved to achieve the low friction coefficient of the cartilage/cartilage interface.
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October 2011
Research Papers
Friction and Wear of Hemiarthroplasty Biomaterials in Reciprocating Sliding Contact With Articular Cartilage
S. M. T. Chan,
S. M. T. Chan
Center for Tissue Regeneration and Repair and Department of Orthopaedic Surgery, School of Medicine,
University of California, Davis
, Sacramento, CA 95817
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C. P. Neu,
C. P. Neu
Center for Tissue Regeneration and Repair and Department of Orthopaedic Surgery, School of Medicine,
University of California, Davis
, Sacramento, CA 95817
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K. Komvopoulos,
K. Komvopoulos
Fellow ASME, Professor, Department of Mechanical Engineering,
University of California
, Berkeley, CA 94720 e-mail:
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P. E. Di Cesare
P. E. Di Cesare
Center for Tissue Regeneration and Repair and Department of Orthopaedic Surgery, School of Medicine,
University of California
, Davis, Sacramento, CA 95817
Search for other works by this author on:
S. M. T. Chan
Center for Tissue Regeneration and Repair and Department of Orthopaedic Surgery, School of Medicine,
University of California, Davis
, Sacramento, CA 95817
C. P. Neu
Center for Tissue Regeneration and Repair and Department of Orthopaedic Surgery, School of Medicine,
University of California, Davis
, Sacramento, CA 95817
K. Komvopoulos
Fellow ASME, Professor, Department of Mechanical Engineering,
University of California
, Berkeley, CA 94720 e-mail:
P. E. Di Cesare
Center for Tissue Regeneration and Repair and Department of Orthopaedic Surgery, School of Medicine,
University of California
, Davis, Sacramento, CA 95817J. Tribol. Oct 2011, 133(4): 041201 (7 pages)
Published Online: October 10, 2011
Article history
Received:
December 29, 2010
Revised:
June 21, 2011
Online:
October 10, 2011
Published:
October 10, 2011
Citation
Chan , S. M. T., Neu, C. P., Komvopoulos, K., Reddi, A. H., and Di Cesare, P. E. (October 10, 2011). "Friction and Wear of Hemiarthroplasty Biomaterials in Reciprocating Sliding Contact With Articular Cartilage." ASME. J. Tribol. October 2011; 133(4): 041201. https://doi.org/10.1115/1.4004760
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