Thank you very much, Sue. The information you provided is very helpful. I briefly read about the higher ion levels and it concerned me. I also have a nickel allergy and am also concerned about any chromium cobalt in my body. I wonder if there are any titanium/titanium modular components? My surgeon is careful, which I appreciate, so I will have a lot of follow-up questions regarding the specific implant. I am in my 50s and am (well was) very active so I think he thinks it would work best for me because increased range of motion and a lesser probability of dislocating. I also have what feels like stretched tissue and a lot of pain behind my greater trochanter, so I think he is trying to provide stability without lengthening me and also bringing my greater troach a little closer to my pelvis. I know revisions usually result in lengthening. When you had your revisions, did they have to lengthen you/stretch tissue for stability? I have bought a little time - I have had two radio frequency ablation procedures to help with the pain because it is unrelenting - never stops, even at rest. So, with this extra time I want to use it to make the best decisions I can and I really appreciate your response.