
406 Computational Modelling of Biomechanics and Biotribology
years, hip prostheses inserted into the human body are replaced. Material
showing low wear rate is therefore critical for prolonging the durability of
hip prostheses. Figure 13.7 shows wear rates of biomedical materials. Such
wear rates vary according to experimental conditions. In experimental con-
ditions similar to those found in a hip prosthesis, wear rate is determined
by interrupting a variety of wear tests at different cycles. The plotted results
revealed that ZTA maintains a lower wear rate than other materials. Thanks
to the low wear rate, shown in Fig. 13.7, and high fractur ...