It's been awhile since I posted or even checked on the surfacehippy site. I got a Cormet 2000 from Dr. Gross in Oct. 2001. All has been great up until about 2 months ago. I now experience a rather persistent ache/pain in my groin. More specifically, it's located on the front inner corner of my sitzbone, and along the front inner area of my groin. I can sit, stand, and walk without too much ado, but when I am still it becomes more pronounced. I plan to have an x-ray, and will send it to Dr. Gross, but the mention of metal debris is new to me. Could anyone out there refer me to more information on that? I'd also like to know if there is a place where symptoms of implant failure are described. Finally, I have developed osteopenia in the last 2 years, and wonder if that will have implications for implant failure; any thoughts? My thanks in advance for what ever information you can send my way. FYI, I am a 58 year old female, former dancer, who has been practicing Iyengar yoga for about 10 years.