Clinical Research Directory

Inclusion Criteria: 1\. Has previously undergone or currently has determined to undergo primary THA with the specified combination of components: PROFEMUR® Preserve Classic Stem combined with other Wright Medical Technologies (WMT) or MPO THA components including acetabular shells, acetabular liners and femoral heads. 2\. Has previously undergone or currently has been determined to undergo a primary THA for any of the following: * non-inflammatory degenerative joint disease such as osteoarthritis, avascular necrosis, ankylosis, protrusio acetabuli, and painful hip dysplasia; * inflammatory degenerative joint disease such as rheumatoid arthritis; * correction of functional deformity 3. Willing and able to complete required study visits and assessments through the 10 year postoperative follow-up visit 4. Previously implanted subjects must be enrolled within 3 years of their primary THA implantation. Exclusion Criteria: 1. Implanted with non-MPO or non-WMT components (femoral heads, acetabular shells, acetabular liners) 2. Skeletally immature (less than 21 years of age) at time of implantation 3. Has or had an overt infection at the time of implantation 4. Has or had a distant foci of infections (which may cause hematogenous spread to the implant site) at the time of implantation 5. Has or had a rapid disease progression as manifested by joint destruction or bone absorption apparent on roentgenogram at the time of implantation 6. Has or had 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 7. Has or had neuropathic joints 8. Has or had hepatitis or HIV infection 9. Has or had a neurological or musculoskeletal disease that may adversely affect gait or weight-bearing 10. Has had a revision procedure(s) where other treatments or devices have failed; and treatment of fractures that are unmanageable using other techniques 11. Currently enrolled in another clinical investigation which could affect the endpoints of this protocol 12. Unwilling or unable to sign the Informed Consent document 13. Has documented substance abuse issue 14. Has an emotional or neurological condition that would pre-empt their ability or willingness to participate in the study 15. Currently incarcerated or has impending incarceration 16. Has a medical condition, as judged by the investigator, that would interfere with the subject's ability to comply with the requirements of the protocol -