I have recently had my 3rd hip replacement, last one (11-13-14) due to a Stryker recall, but I am continuing to have testicular pain. I have been to the Urologist who finds nothing, who then sends me back to my surgeon. My first hip replacement was a Smith & Nephew (BHR) (4-09) that had to be fixed, only to have a faulty Stryker put in (9-11). I have had urine tests at my PCP, who sometimes advises small traces of blood in my urine. ???? All of a sudden? Could cobalt or chromium increased levels in my blood be causing this? Not enough studies? Please help as to why my testicle is hurting all the time. Its a dull short burst of pain. I need answers!! I am only 44 years old.