Evaluation of Bone Mineral Density Changes After Total Hip Replacement: A Two-Year Clinical and DXA Analysis

Inclusion Criteria: To be included in the study, subjects must meet all of the following criteria: * Subject is minimum age 21 years, maximum age of 80 * Subject is a candidate for primary THA for osteoarthritis of the hip * Subject is able to undergo primary elective THA procedure * Subject is willing and able to complete required study visits and assessments * Subject is willing to sign the Institutional Review Board/Ethics Committee (IRB/EC) approved Informed Consent document. Exclusion Criteria: Subjects will be excluded if they meet any of the following criteria: * Overt infection; * Distant foci of infections (which may cause hematogenous spread to the implant site); * Rapid disease progression as manifested by joint destruction or bone absorption apparent on roentgenogram; * Skeletally immature (less than 21 years of age at time of surgery); * Inadequate neuromuscular status (e.g., prior paralysis, fusion, and/or inadequate abductor strength), poor bone stock, poor skin coverage around the joint which would make the procedure unjustifiable; * Neuropathic joints; * Known Hepatitis or HIV infection; * Neurological or musculoskeletal disease that may adversely affect gait or weight-bearing * Subjects with known osteoporosis of the affected hip * Subjects with prior arthroplasty of the affected hip * Subjects that are clinically obese (\>40 body mass index \[BMI\]) * Subjects with femoral dysplasia of the affected hip * Subjects with trochanteric osteotomy of the affe…