Outcomes 7 to 10 years following total hip replacement

This study looks at how well total hip replacement holds up 7 to 10 years after the surgery. Researchers want to find out how much bone loss happens around the hip implant, how much the plastic lining wears down, and whether the cup moves over time. They also want to know how often the hip dislocates or causes instability problems. The study also compares two different sizes of the metal ball in the hip joint — a smaller 28 mm ball versus a larger 36 mm ball — to see if size makes a difference in long-term results. You may be eligible if: - You were previously enrolled in the related clinical trial ACTRN12609000678291 - You had a total hip replacement as part of that original trial - You are 67 years of age or older You may NOT be eligible if: - You were not part of the original hip replacement trial (ACTRN12609000678291) Talk to your doctor about whether this trial might be right for you.