Cormet Post-PMA Study: New Enrollment

Inclusion Criteria: * Male or female patient who meets eligibility criteria consistent with product labeling * skeletally mature * mentally capable of completing follow-up forms * Will be available for follow-up out to 2 years and annually thereafter until the last patient reaches the two-year evaluation * Has been deemed a candidate for hip replacement by diagnosis of the investigator * consented to participate in the clinical study Exclusion Criteria: * Patient with active or suspected infection in or around the hip joint; * Patient with bone stock inadequate to support the device * Patient with severe osteopenia * Patient with a family history of severe osteoporosis or severe osteopenia; * Patient with osteonecrosis or avascular necrosis (AVN) with \>50% involvement of the femoral head (regardless of FICAT Grade) * Patient with multiple cysts of the femoral head (\>1cm) * In cases of questionable bone stock, a DEXA scan may be necessary to assess inadequate bone stock. * Patient with any vascular insufficiency, muscular atrophy, or neuromuscular disease severe enough to compromise implant stability or postoperative recovery; * Female of child-bearing age due to unknown effects on the fetus of metal ion release. * Patient with known moderate or severe renal insufficiency; * Patient who is immunosuppressed with diseases such as AIDS or person receiving high doses of corticosteroids; * Patient who is severely overweight; * Patient with known or suspected metal sensitivity (e.g., jewelry).