Cementless Alumina-Alumina Total Hip and Hybrid

Inclusion Criteria: * Patients with inflammatory tissue disorders (e.g. rheumatoid arthritis, lupus, etc), osteoarthritis, post-traumatic arthritis or secondary arthritis, or avascular necrosis. * Less than 70 on preoperative HHS score * Primary total hip replacement * Patient is likely to be available for evaluation for the duration of the study. Exclusion Criteria: * Patients with physical conditions that would eliminate adequate implant support or prevent the use of an appropriately sized implant (e.g., tumor) * Previous surgery that has adversely affected bone stock (such as some hip pinning or some osteotomies) or prior total hip replacement. * Insufficient quality or quantity of bone resulting from conditions such as: * Cancer, where radiation has destroyed the available bonestock * Congenital dislocation * Metabolic bone disease of the upper femur or pelvis * Femoral osteotomy revision * Girdlestone revision * Active infection of the hip joint * Old or remote infection * Other conditions that lead to inadequate skeletal fixation * Neurological conditions that might hinder patient's ability to follow study procedures, e.g., to restrict physical activities (e.g., Severe Parkinson's, CVA on affected side) * Patient's mental condition that may interfere with his ability to give an informed consent or willingness to fulfill the required follow-up of the study * Mental illness * Senility * Drug Abuse * Alcoholism * Conditions that place excessive demands on the implant * Charcot's joints * Muscle deficiencies * Multiple joint disabilities * Refusal to modify postoperative physical activities * Skeletal immaturity * Obesity (50% over recorded body weight mass index) * Greater than or equal to 70 on preoperative HHS score