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Changing the Mechanical Properties of PMMA Bone Cement with Nano and Micro Particles Ricardo F. Pinto, Brandon J. Johnson, L. D. Timmie Topoleski
 

Summary: Changing the Mechanical Properties of PMMA Bone Cement with Nano and Micro Particles
Ricardo F. Pinto, Brandon J. Johnson, L. D. Timmie Topoleski
University of Maryland Baltimore County, USA
Statement of Purpose: Total joint arthroplasty is a highly
successful way to restore pain free function to patients afflicted
with arthritis. Polymethylmethacrylate (PMMA) bone cement is
commonly used as a grouting and stress transfer agent in artificial
joints. The historical success rate on patients over 60 years
exceeds 90% (in a ten year time frame)1
, however the failure rates
for total knee implants and hip implants for younger patients are
much higher. Loosening is often preceded by the fracture of the
bone cement2
, and this inevitably leads to a revision surgery2 3
.
The objective of this research is to increase the fracture resistance
of bone cement to improve artificial joints. Changing the
fundamental microstructure may lead to increased fracture and
fatigue resistance. Using novel particles on the micro and nano
size scale, we hope to change the microstructure by implementing

  

Source: Alonso, Juan J. - Department of Aeronautics and Astronautics, Stanford University

 

Collections: Engineering