ABSTRACT
Orthopedic joint implants are widely used in orthopedic surgery, particularly for
the hip joint. Each year, more than 250,000 of orthopedic hip joints are implanted
in the United States alone to treat severe hip joint disease, and this number is
increasing every year. Although much research work has been devoted to various
aspects of this topic, there are still several important problems. In the past, most
of the research was conducted by bioengineering and medical scientists, and
participation by the tribology community was limited. In fact, in the past decade
there has been a significant improvement in bearings in machinery, but the design
of the hip replacement joint remains basically the same. This is an example where
engineering design and the science of tribology can be very helpful in actual
bioengineering problems.
