Emphasys Radiostereometric Analysis

Exclusion Criteria

• •1. Individuals who have active local or systemic infection.
• •2. Individuals who have loss of musculature, neuromuscular compromise or vascular compromise that would impact rehabilitation following surgery.
• •3. Individuals with poor bone quality, such as osteoporosis, where in the surgeon's opinion, there could be considerable migration of the prosthesis or require additional acetabular cup fixation using screws, or a significant chance of fracture of the femoral shaft and/or the lack of adequate bone to support the implant(s).
• •4. Individuals with Charcot's or Paget's disease.
• •5. Individuals who, in the judgement of the investigator, would not be a candidate for protocol allowable components to be used for their THA.
• •6. Women who are pregnant or lactating.
• •7. Individuals who have had a contralateral hip that was implanted less than 6 months prior to the time of consent into this study or individuals that expect to have a contralateral hip implanted in the following 6 months at the time of consent into this study.
• •8. Individuals that have amputations in either leg that would impact rehabilitation following surgery.
• •9. Individuals who are bedridden
• •10. Individuals that have participated in a clinical investigation with an investigational product (drug or device) in the last three months.
• •11. Individuals currently involved in any personal injury litigation, medical-legal or worker's compensation claims.
• •12. Individuals, in the opinion of the Investigator, who are drug or alcohol abusers or have a psychological disorder that could affect their ability to complete patient reported questionnaires or be compliant with follow-up requirements.
• •13. Individuals diagnosed and taking prescription medications to treat a muscular disorder that limits mobility due to sever stiffness and pain such as fibromyalgia or polymyalgia.
• •14. Subject has a medical condition with less than 2 years life expectancy.
• •15. Individual has a BMI \>45 kg/m2.