Dear all,
I am running some test on human femoral heads using the hip simulator against different material cups to workout which material is the best, could you please tell me what is the best way to preserve the samples during the test, which serum works best? Most studies use bovine serum but I have real human samples and am not sure if I can use that. Also is it okay to run the samples for 1 million cycles (or more)? Is it necessary to adjust the environment temperature in order to avoid any damage to the samples? Wouldn't its properties change during the test? Are there any groups that work on human samples in hip simulators with different cup materials?
Many thanks in advance,
Maryam
Many years ago (more than 12) I had been in Switzerland in a hip simulating lab and they were using for the tests of ceramic on ceramic articulations bovine serum. Their argument was that it was cheap enough and easy to be found. Friction must be similar to human anyway. About the cycles you have to experiment on this. I believe that you have to careful as the heads may not have the same bone density and they may not all "afford" to be stressed with the same number of cycles. A bone density of each head may help you understand the limitations. Sorry that I cannot be more helpful. I wish you good luck.
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