A Prospective Radiostereometric Analysis and Clinical Evaluation of the Zimmer® Continuum® Acetabular Cup With Vitamin E Stabilized Polyethylene

Inclusion Criteria: * Symptomatic osteoarthritis of the hip indicating surgical intervention * Scheduled to undergo an uncemented total hip arthroplasty (THA) * Patients between the ages of 18 and 65, inclusive * Ability to give informed consent * Patients will be available for follow-up for a minimum of 2 years after surgery Exclusion Criteria: * Patients less than 18 years of age, or older than 65 years of age. * Post-traumatic arthritis in the affected hip * Rheumatoid arthritis in the affected hip * Hip dysplasia in the affected hip * Prior arthroplasty of the affected hip * Active or prior infection of the affected hip * Morbid obesity (BMI \> 35) * Medical condition precluding major surgery * Severe osteoporosis or osteopenia * Neuromuscular impairment * Patients with known allergy to metals * Pregnancy * Patients with compromised kidney function * Patient is immuno-suppressed * Patients that require a femoral head less than 32 mm or greater than 40mm.